# Which is NOT a function? A.y-x=6 B.y=2x C.x=-2 D.y+x=12 I think the answer is B, but I'm not too sure. please help me I'm relly struggling

77,623 questions
1. ## Algebra II

Consider the function y = 1/x. A. What happens to the value of the function as the value of x gets very large? My answer: the value of the function increases. B. For what value of x is the function undefined? Explain why. My answer: 0, because it is not

asked by Sam on February 26, 2019
2. ## Math / Algebra

Can you check my work? Thank you :) 1. The Domain of a function F is the same as the range of F^-1 (True or False?) Answer: True. 2. Does the function y = |x-2| have an inverse? Select the best answer. A. Yes, it passes the horizontal line test. B. No, it

asked by Allison on January 27, 2015
3. ## Software

The questions said List four major functions of an OS? The answer i put was Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage applications Is my answer correct?

asked by DJ on February 10, 2013
4. ## software

The questions ask List four major functions of an OS. My answer: Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage applications Is my answer correct?

asked by DJ on February 12, 2013
5. ## pre calc

The Identity Function The Squaring Function The Cubing Function The Reciprocal Function The Square Root Function The Exponential Functional Lo The Natural Logarithum Function The Sine Function The Cosine Function The Absolute Value Function The Greatest

asked by kim on December 18, 2009
6. ## computer science check

Which of the following examples correctly describes the order in which these parts of a program should be written? (Select the best answer.) A- The import command, then function definitions, then function calls B- Function definitions, then the import

asked by Skye on January 4, 2015
7. ## calculus

Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not

asked by john on October 14, 2010
8. ## calculus

Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not

asked by Vick on October 14, 2010
9. ## Math - Answer Check

Write the composition function and then find the value. f(x) = 2x+3 g(x) = x^2 k(x) = square root(x - 4) 1. g(k(x)) g(k(20)) My answer: Function is x - 4, the value is 16. 2. f(g(x)) f(g(2)) My answer: Function is 2x^2 + 3, the value is 11.

asked by Anonymous on February 11, 2015
10. ## math

Answer the following questions for the function f(x)=sin^2(x/5) defined on the interval .(-15.507923,3.82699075) Rememer that you can enter "pi" for as part of your answer. a.what is f(x) concave down on the region B. A global minimum for this function

asked by li on November 5, 2011
11. ## calculus

1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for

asked by anon on September 28, 2015
12. ## Algebra 1B Radical expressions & data analysis

1. Simplify 2/√5 A. 2/√5 B. √10 C. √10/5 D. 2√10/5 *** My answer 2. Simplify -11√112 A. -44√7 B. -176 √7 C. -27 √7 D. 4√7 *** My answer 3. Simplify 17√17 -9 √17 A. 8 *** My answer B. 8√17 C. 26√17 D. 8√0 4. Simplify 6/ √3 +

asked by Mermaid99 on May 23, 2016
13. ## Calculus

Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ -9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this

asked by Anonymous on November 2, 2011
14. ## Elementary Satistics

Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of

asked by Vickie Huff on September 21, 2014
15. ## calculus

(1 pt) A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 15 dollars, the company sells 132 units per week. When the price is 27 dollars, the number of DVDs sold decreases to 84 units

asked by mae on October 12, 2010
16. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 8, 2010
17. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 10, 2010
18. ## calculus

(1 pt) A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 15 dollars, the company sells 132 units per week. When the price is 27 dollars, the number of DVDs sold decreases to 84 units

asked by mae on October 13, 2010
19. ## math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per

asked by kim on October 10, 2010
20. ## Math

The graph of a rational function has a local maxima at (-1,0) and (8,0). The complex number 2+3i Is a zero of the function. What is the least possible degree of the function Answer is 6 But i need help with an explanation.

asked by Jay on December 11, 2017
21. ## Math

The graph of a rational function has a local maxima at (-1,0) and (8,0). The complex number 2+3i is a zero of the function. What is the least possible degree of the function? I know The correct answer is 6. I need help with the explanation please.

asked by Anyki. on December 31, 2017
22. ## math

The cost of producing q articles is given by the function C=f(q)=100+2q. (A) Find the formula for the inverse function. (B) Explain in practical terms what the inverse function tells you. I am pretty sure the answer to A is f^-1(C)=C/2-50 For B, the

asked by Hamilton on August 15, 2008

Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is invertible or not. Please check this for me. I am not sure if I am adequately explaining my answer and if my answer is right. a) y=

asked by C on March 23, 2011
24. ## CALCULUS DERIVATIVES CONTINUITY

Let f be the function defined by the piecewise function: f(x) = x^3 for x less than or equal to 0 x for x greater than 0 Which of the following is true? a) f is an odd function b) f is discontinuous at x=0 c) f has a relative maximum d) f'(0) = 0 e) f'(x)

asked by NEED HELP NOW on May 31, 2012
25. ## Calculus

Og Function: -cos(3x) Derivative Function: 3 sin(3x) The period for the function and its derivative is 2π/3 radians. Over one period, when is the derivative function equal to its original function? That is, when is f(x) = f '(x) over 0≤x≤2π/3? Round

asked by Anonymous on November 20, 2018
26. ## Algebra

1.What is the shape of the graph of any linear function? Answer-line 2. Solve for x in |5x -2| >5 Answer- 2/3 < x

asked by lizzie on August 7, 2011
27. ## math

Consider the following. lim x→−2 2x^2 − 2x − 12/x + 2 Find the limit of the function (if it exists). (If an answer does not exist, enter DNE.) Write a simpler function that agrees with the given function at all but one point. g(x) = ??? thnks

asked by Anonymous on January 28, 2012
28. ## calculus

Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not

asked by Vick on October 14, 2010
29. ## Algebra

There is a table of values for the function f. They read: x=3, f(x)=4 x=4 f(x)=5 x=5 f(x)=6 x=6 f(x)=3 x=7 f(x)=5 x=8 f(x)=7 What is the value of 2f(5)-f(4)? I did this wrong obviously, but what I did was figure out the function of five from the table (4),

asked by Benjamin on November 25, 2010
30. ## calculus

Evaluating an exponential function The function gives the value of a home in dollars in the year 1980 + t. What was the value of the home in 1988? Round your answer to the nearest whole dollar amount and give units. You would evaluate for t=8. The units

asked by Joshua on September 5, 2006
31. ## Precalculus

Verify these answers 1.Which of the six trigonometric functions are positive in quadrant III? Answer: tangent and cotangent -------------------------------------- 2. What is the amplitude of the function y = pi/2 sin(6/3t - pi/6) + 14? Amplitude: pi/2

asked by Melinda on January 18, 2012
32. ## Calculus

Can someone help me check my answers 1. Find the range of the function f(x) = x∫-6 √36-t^2 dt - [-6, 0] - [0, 6] - [0, 9π] (my answer) - [0, 18π] 2. Use the graph of f(t) = 2t + 2 on the interval [-1, 4] to write the function F(x), where f(x) =

asked by Chris on July 2, 2018
33. ## Calculus

For the demand function find the elasticity function. Problem 52. p=D(x)=18-Sqrt[x] My answer is [-36x^1/2 + 2x]/x However, the answer in book is [-2(18-x^1/2)]/[x^1/2]

asked by Sarah on December 10, 2007
34. ## Calculus

For the demand function find the elasticity function. Problem 52. p=D(x)=18-Sqrt[x] My answer is [-36x^1/2 + 2x]/x However, the answer in book is [-2(18-x^1/2)]/[x^1/2]

asked by Sarah on December 9, 2007
35. ## Math: Calculus

Answer the following questions for the function f(x) = \frac{ x^3 }{ x^2 - 36 } defined on the interval [ -20, 16 ]. A. The function f(x) has vertical asympototes at____ and___ B. f(x) is concave up on the region___ to and____ to___ C. The inflection point

asked by REALLY NEED HELP!!!! on November 3, 2010
36. ## Math: Calculus

Answer the following questions for the function f(x)=sin(x/4)^2 defined on the interval [-12.266371, 2.241593]. Rememer that you can enter pi for as part of your answer. a.)f(x) is concave down on the interval ____. b.) A global minimum for this function

asked by NEED HELP!!!! on November 3, 2010
37. ## Calculus

I need to find the slope of the graph of the function at the given point. Function: f(theta)=4sin(theta)-(theta) Point: (0,0) I tried finding the derivative of the function at theta=0, but I got 0 for an answer. I checked the answer in the back of my book

asked by Corin on September 3, 2007
38. ## Math

Can someone help me with these T.T 1.Which polynomial function would have the end behaviour of as x-> -∞, y= +inf and as x-> ∞, y-> -∞? a) f(x) = -6x^4 - x^5 + 5x^3 - x^2 - 4x + 9 b)f(x)= 6x^4 + x^5 - 5x^3 + x^2 + 4x - 9 c)f(x) = 3x^2 + x - 11

asked by Jacob on December 8, 2011
39. ## Calculus Finals Review sheet!! Explanation needed

Here is a graph of the derivative y' of a continuous, differentiable function. For approximately what values of x between Ã¢Ë†â€™5 and 5 does the original function y have inflection points? Find limit as x approaches 3.5 [[x-2]]/x (Remember that

asked by Prince@18 on December 17, 2016
40. ## Algebra; HELP IMMEDIATELY

I don't understand the topic we're learning in math. /: Provide an explanation, steps on how you figured the answer out, and of course, the answer. Tell whether the abe represents an exponential function. If so, write a rule for the function. x: -2, -1, 0,

asked by He's not all bad like his reputation </3 on February 2, 2012

I don't understand the topic we're learning in math. /: Provide an explanation, steps on how you figured the answer out, and of course, the answer. Tell whether the table represents an exponential function. If so, write a rule for the function. x: -2, -1,

asked by He's not all bad like his reputation </3 on February 2, 2012
42. ## Calc 1

Consider the function below. f(x) = (x^2)/(x−9)^2 (a) Find the vertical and horizontal asymptotes. x=? y=? (b) Find the interval where the function is increasing. (Enter your answer using interval notation.) Find the interval where the function is

asked by TayB on April 24, 2015
43. ## math

How do I know that x^2-7=y is a function? thanks you know its a function because its a parabola (x^2) parabolas are functions because there is only one x value per y value. So I know it is a function because it has (x^2)? Is that the rule? If it has x^2,

asked by Mimi on March 20, 2007
44. ## algebra

the answer to The set of ordered pairs (–1, 8), (0, 3), (1, –2), and (2, –7) represent a function. What is the range of the function? the answer is {y: y = –7, –2, 3, 8}

asked by ria on May 1, 2019
45. ## Calculus HELP

Original Function: -cos(3x) Derivative Function: 3 sin(3x) The period for the function and its derivative is 2π/3 radians. Over one period, when is the derivative function equal to its original function? That is, when is f(x) = f '(x) over 0≤x≤2π/3?

asked by Anonymous on November 20, 2018
46. ## Trigonometry

Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

asked by Veronica on March 24, 2011
47. ## Trigonometry

Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

asked by Veronica on March 24, 2011
48. ## Math

Provide an example of at leave five ordered pairs that do not model a function.? The domain will be any 5 integers between 0 and 20. The range will be any 5 integers between -10 and 10. Can someone please help me with this? Explain how you got the answer

asked by Sarah on April 28, 2010
49. ## MATH help can anyone check my answer plzz!!

1)evaluate the function for x=2f(x)=7x-5 A)9 B)19 C)-9 D)-19 2)Candy is on sale for $0.75 each you have a coupon for$0.25 off your total purchase write a function rule for the coast on n pieces of candy. A)C(n)=0.25n-0.75 B)C(n)=0.75n-0.25 C)C(n)=1.0n

asked by that emo girl! on February 8, 2018
50. ## calcius

Determine whether the relation represents a function. If it is a function, state the domain and range. {(-2, 1), (-1, -2), (0, -3), (1, -2), (3, 6)} a. function domain: {-2, -1, 0, 1, 3} range: {1, -2, -3, 6} b. function domain: {1, -2, -3, 6} range: {-2,

asked by rachel on June 9, 2008
51. ## Math

Would someone please check my answers to this problem: The license fee for a car varies directly with the value of the car. The fee for a car that is valued at $19,500 is$292.50. What is the constant of proportionality? My answer is: .105 cents per every

asked by Merl on April 22, 2007
52. ## Inflection and concavity

Consider the function f(x) = 2 x + 3 x ^ { -1 }. Note that this function has no inflection points, but f''(x) is undefined at x=B where B= 6/x^3(my answer) For each of the following intervals, tell whether f(x) is concave up (type in CU) or concave down

asked by heffcliff on January 26, 2018
53. ## Math

The graph represents function 1 and the equation represents function 2: A graph with numbers 0 to 4 on the x-axis and y-axis at increments of 1. A horizontal straight line is drawn joining the ordered pairs 0, 3 and 4, 3. Function 2 y = 3x + 1 How much

asked by Marc-Anthony on January 11, 2016
54. ## College Algebra

The graph of a quadratic function f(x) is shown above. It has a vertex at (-2,4) and passes the point (0,2). Find the quadratic function y=a(x-(-2))^2+4 y=a(x+2)+4 2=a(x+2)+4 -4 -4 -2=a(0+2)/2 -1+ a function -1(x+2)+4 ? Im not sure where Im going wrong but

asked by Anonymous on June 12, 2014
55. ## Algebra 2

Is my answer correct? Directions: Determine whether y is a function of x. Problem: x^2+y^2=16 Answer: x^2+y^2+-x^2=16+-x^2 y^2=-x^2+16 y= ±√-x^2+16 y is not a function of x

asked by Neil on November 18, 2015
56. ## Algebra

Use the function to answer the question. f(x)=1/4-x For what value in the domain is the function undefined? Explain your answer.

asked by Nicole on April 20, 2012
57. ## math

Answer the following questions for the function f(x)=x(sqrtx2+25) defined on the interval [–5,4]. A. f(x) is concave down on the region to B. f(x) is concave up on the region to C. The inflection point for this function is at D. The minimum for this

asked by kitor on May 29, 2013
58. ## Calculus (Continuity and Differentiability)

Okay. So I am given a graph of a derivative. From what I can gather, it looks like the function might be abs(x-2)-4. (I was not given an explicit function for g', just its graph.) The question then goes on to ask me: Is it possible, impossible, or certain

asked by Mishaka on November 12, 2011
59. ## Math

Verify these answers :] Would be thankies~ 1. Determine the intervals in which the reciprocal function of f(x)= x^2+1 is increasing. a) (0,∞) b) (-∞, 0) c) (-∞,∞) d) (1,∞) Answer: D -------------------------------------- 2. Determine the point(s)

asked by Jayson on December 21, 2011
60. ## Algebra

Please check my answers. Thanks! Solve the polynomial equation. In order to obtain the first root, use synthetic division to test the possible rational roots. 5.2x^3-13x^2+22x-8=0 -My answer:{1/2,2,4} 6.x^3-8x^2-x+8=0 -My answer: {1,-1,8} Find the rational

asked by Jes on October 9, 2007
61. ## MATH

Let f(x) = m1x + b1 and g(x) = m2x + b2 be two linear functions. Answer the following, noting that answers may depend on the the ms and bs. a. Is f (x) + g(x) a linear function of x? b. Is f (x) − g(x) a linear function of x? c. Is f (x) × g(x) a linear

asked by Sara V. on April 15, 2017
62. ## math

One hundred meters of fencing is available to enclose a rectangular area next to a river. Give a function A that can represent the area that can be enclosed in terms of x. Function : A = Answer x2 + Answer x

asked by joyce on August 29, 2017

Consider the function f(x)= x −1≤ x< 0 f(x)=tan(x) 0≤ x ≤ π/4 a. Draw a neat sketch of this function. b. Is f(x) continuous at x = 0? (Justify your answer.) c. Is f(x) differentiable at x = 0? (Justify your answer.) show steps! Thanks!

asked by Anonymous on April 8, 2014

Use the graph of f(t) = 2t +2 on the interval [−1, 4] to write the function F(x), where f(x)= integral from 1 to x f(t) dt f(x)=x^2+3x f(x)=x^2+2x-12 My Answer f(x)x^2+2x-3 f(x)=x^2+4x-8 Find the range of the function f(x)=integral from 0 to x (sqrt

asked by Ke$ha on May 22, 2017 65. ## MATH The formula for the area of a circle and the volume of a sphere an be though of as functions of the radii of the shapes. (Anything you could answer would be so helpful) Thank you!! a) Write a rule expressing the area of a circle as a function of its asked by Julie on February 10, 2013 66. ## Precalculus (Please Help!!??) The formula for the area of a circle and the volume of a sphere an be though of as functions of the radii of the shapes. (Anything you could answer would be so helpful) Thank you!! a) Write a rule expressing the area of a circle as a function of its asked by Julie on February 10, 2013 67. ## Macroeconomic An increase in the capital stock will: A. Shift production function downward. B. Shift the production function upward C. Flatten the production function D. Steepen the production function The answer is B? asked by Juan on May 30, 2014 68. ## Math (Trigenometry) Write f(x)=x^4-12x^3+59x^22-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I asked by Anonymous on February 8, 2011 69. ## Math (Trigenometry) 3 Write f(x)=x^4-12x^3+59x^22-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I asked by 2012 on February 8, 2011 70. ## Math (Trigenometry) Write f(x)=x^4-12x^3+59x^2-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I asked by Anonymous on February 8, 2011 71. ## Calculus Consider a differentiable function f having domain all positive real numbers, and for which it is known that f'(x)=(4-x)x^-3 for x>0. A. Find the x-coordinate of the critical point of f. Determine whether the point is a relative maximum, a relative asked by Sarah on May 7, 2015 72. ## Algebra - Can you PLEASE check - I"m stuck! Bob is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: F(N)=10(1.02)^n 1. Starting from 0 days, plug x-values into our function to find out how many days it asked by Jake on November 17, 2014 73. ## Calculus Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is invertible or not. Please check this for me. I am not sure if I am adequately explaining my answer and if my answer is right. a) y= asked by C on March 23, 2011 74. ## College Algebra A quadratic function has its vertex at the point (-9,8). The function passes through the point (9,4). When written in vertex form, the function is f(x)= a(x-h)^2 +k, where a) h)-9 k)8 4=a(9)^2+8 4=a(9+9)^2+8 4=a(18)^2+8 4=a(332) a=0.01204 I was able to asked by Anonymous on June 12, 2014 75. ## calc help showed work If the function f has a continuous derivative on [0,c], the the integral(o to c) of f'(x)dx= a)f(c)-f(0) b)absolute value (f(c)- f(0)) c) f(c) d)f'(x)=c e)f"(c)-f"(0) My work: so the the answer to the integral is f(x) and when find the answer from o t0 c, asked by david on December 7, 2006 76. ## Math Use the given graph of the function on the interval (0,8] to answer the following questions. Where does the function f have a local maximum? Answer (separate by commas): x= Where does the function f have a local minimum? What is the global maximum of f? asked by Jake on March 26, 2019 77. ## Algebra-Mathmate or Reiny or Dr. Bob, please check I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it asked by Anna on December 14, 2010 78. ## precalculus Can you please check and correct my answers? Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½ answer: y=2 Given: 5cos6Θ What is the shape of the function? ________________________________________ Limacon asked by martha on December 11, 2016 79. ## math The following set of points belong to a specific function: {(-3,0)(-2,4), (-1,0), (0,-6),(1,-8), (2,0),(3,24)} Based on the set of points answer the following questions: a) What type of function does it produce? Justify your answer. b) Write an equation asked by FUNCTIONS on July 5, 2013 80. ## Math The table shows some values for the function f. If f is a linear function, what is the value of a+b? a24 b36 c48 d72 eit cannot be determined from the information given. x f(x) 0 a 1 24 2 b The Answer is c48. How did they arrive at that answer????????? The asked by Mack on May 20, 2007 81. ## calc again! i got answers for this one, but i feel like i did something wrong. f(x)= 2x+1 when x is less than or equal to 2 (1/2)x^2 + k when x is greater than 2 1) what value of k will make f continuous at x = 2? my answer: i got k = 3 because it would make the two asked by jane on February 20, 2009 82. ## calculus I am confused on how to write this function as an exponential function having a base 10: P(t)= 50e^(0.5t). The answer in my textbook is: P(t) =50(10)^(t/4.6) asked by Ted on April 20, 2010 83. ## Math Tell whether the function is linear. Then evaluate the function for the given value of x. 6.) f(x)= 3-3x; f(2) 7.) f(x)= | x+2 | ; f(-4) 8.) f(x)= 2/x-2; f(6) 14.) f(x)=2/3x-5 ; f(9) Can someone help me with these^^. please write the QUESTION # SO I know asked by Farrah on September 2, 2014 84. ## algebra Y= 3x+5> Is this equation a function? I believe it is but I am confused, My understanding of functions is that regardless of what number I use for x, as long as I get one answer for y it is a function asked by kelly on July 12, 2011 85. ## Calc g'(x)=tan(2/1+x^2) Let g be the function with first derivative given above and g(1)=5. If f is the function defined by f(x)=ln(g(x)), what is the value of f'(1)? I know the answer is 0.311, but I need steps as to why. Please and thanks. asked by Will on January 14, 2017 86. ## Algebra Does this relation define a function? y^2=3x My answer: 3x=y^2|0|3|12|27 y |0|1| 2| 3 y^2=3x is a function because the coordinates I chose are not duplicated. asked by Sara on March 28, 2008 87. ## Algebra Does this relation define a function? y^2=3x My answer: 3x=y^2|0|3|12|27 y |0|1| 2| 3 y^2=3x is a function because the coordinates I chose are not duplicated. asked by Sara on March 28, 2008 88. ## Algebra 53. Determine if y=x^2 is a function. i think the answer is yes, but can someone explain to me why it's yes, and how you find out if it's a function or not. I know that for every value of x there should be one value of y, but how do you figure that out in asked by y912f on May 7, 2010 89. ## Math A landlady currently rents each of her 50 apartments for$1300 per month. She estimates that for each \$100 increase in rent, two additional apartments will remain vacant. a. Construct a function that represents the revenue R(n) as a function of the number

asked by Anne on November 14, 2016
90. ## Algebra 1

Which of the following statements is true about the function y = 5⋅x4 ? It is an even function It is an odd function It is an exponential function It is an inverse function

asked by Jamie Ciacico on August 14, 2015
91. ## Algebra

Suppose H(x)=(sqrt5x+3). Find two functions f and g such that (fog)(x)= H(x) . f(x)= g(x)= Neither function can be the identity function. (There may be more than one correct answer.)

asked by Janet on February 4, 2011
92. ## Calculus

If f(x)= -4x^2+7 and x≤0, what is the equation of the inverse function? The answer is supposed to be f^-1(x)= -[√(7-x)]/2, but this is what I did: x=-4y^2+7 -4y^2=x-7 y^2=(x-7)/-4 y= √[(x-7)/-4] Did I do something wrong? By the way, for the original

asked by Ann on March 10, 2014
93. ## math

If you switch the domain and range of any function, will the resulting relation always be a function? Explain your answer with examples.

asked by arya on October 2, 2008
94. ## calculus

How many critical points does the function: (x+2)^5 * (x-3)^4 have? How would I solve this quickly? The answer says something about an effect of multiplicity of the zeros of the function?

asked by Mira on April 22, 2011
95. ## Algebra

The ordered pairs (1,1), (2,8), (3,27), (4,64) , and (5,125) represent a function. What is a rule that represents this function? My answer is y = x cubed

asked by Steve on October 17, 2014
96. ## calculus

Consider the function f(x) = 3-3 x^{2/3} on the interval [ -1 , 1 ]. Which of the three hypotheses of Rolle's Theorem fails for this function on the inverval? (a) f(x) is continuous on [-1,1]. (b) f(x) is differentiable on (-1,1). (c) f(-1)=f(1). Answer:(

asked by sze on January 26, 2018
97. ## Calculus

f'(x)=sqrt(x)*sin(x) The first derivative of the function f is given above. If f(0)=0, at which value of x does the function f attain it's minimum value on the closed interval [0,10]? I know the answer is 6.28, but I need steps as to why. Please and thank

asked by Mike on January 11, 2017
98. ## Algebra

Please check my answer The ordered pairs (0,1), (1, 6),(2, 36), (3, 216), and (4, 1,296) represent a function. What is a rule that represents this function? A y=x^6*** B y=6x C y=x+6 D y=6x

asked by Matt on May 20, 2016
99. ## Math

Which is NOT a function? A y – x = 6 B y = 2x C x = -2 D y + x = 12 I don't understand what a function is, and my answer choice is D, if I'm wrong, please help

asked by PugSimmer on March 22, 2018
100. ## Calculus

Given the function f(x) = (x-2)/(x^3-8), what value should be assigned to f(x) to make the function continuous at x=2? Please walk me through this. I have the answer but do not know how to get it.

asked by Britt on December 9, 2007