1.Answer the following for the given quadratic function. f(x) = -2x^2 - 8x - 13 (a) does the graph of f open up or down? (b) what is the vertex (h,k) of f? (c) what is the axis of symmetry?

76,941 results
1. 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 13, 2014
2. Algebra 1

The roots of a quadratic equation are -1 and -5, and a=1. A.) What are the factors of the quadratic expression? B.) Write the function in standard form using function notation. C.) What is the degree of this function? D.) Identify the vertex

asked by Caitlyn on December 1, 2017
3. College Algebra

Let g(x) = -2x2 + bx + c be a quadratic function, defined everywhere, where b and c are constants. If x = 1 marks the location of one of the zeros of this quadratic function, and if the y-intercept of this function is at (0, 5), then use this information

asked by Brianna on September 26, 2011
4. college Algebra

Let g(x) = -2x2 + bx + c be a quadratic function, defined everywhere, where b and c are constants. If x = 1 marks the location of one of the zeros of this quadratic function, and if the y-intercept of this function is at (0, 5), then use this information

asked by Brianna on September 26, 2011

Determine the standard form of a quadratic function whose graph has a y intercept of 8 and a vertex at (-2,-4). The answer is f(x)= 3x^2 + 12x +8 but I can't figure out how to get the answer. Solve x^2 + x=6, by factoring. The answer is x=-3,2 but I can't

asked by Heaven on June 1, 2016
6. math 11

4. a)how many different x-interceps could the graph of a quadratic function have? explain. it can have more than one because a parabola is a curved line on a graph in which case it touches two or more different points on the x-axis b)how many different

asked by kerri on September 17, 2009

Please explain to me how to do the following problems, I don't understand them. Thanks! Find the x-intercepts (if any) for the graph of the quadratic function. 1.f(x) = (x + 2)2 - 4 Find the y-intercept for the graph of the quadratic function. 5.y + 9 = (x

asked by Carmen on October 14, 2007
8. Algebra

Please check my answers. Find the coordinates of the vertex for the parabola defined by the given quadratic function. 1.f(x) = (x - 4)2 - 4 -I got (4,-4) Find the axis of symmetry of the parabola defined by the given quadratic function. 3.f(x) = (x + 2)2 +

asked by Soly on October 15, 2007
9. Algebra

Please check my answers. Find the coordinates of the vertex for the parabola defined by the given quadratic function. 1.f(x) = (x - 4)2 - 4 -I got (4,-4) Find the axis of symmetry of the parabola defined by the given quadratic function. 3.f(x) = (x + 2)2 +

asked by Soly on October 15, 2007
10. Algebra Problems

Please check my answers. Find the coordinates of the vertex for the parabola defined by the given quadratic function. 1.f(x) = (x - 4)2 - 4 -I got (4,-4) Find the axis of symmetry of the parabola defined by the given quadratic function. 3.f(x) = (x + 2)2 +

asked by Soly on October 15, 2007
11. Pre-Calc

A quadratic function has its vertex at the point (-5,-2). The function passes through the point (-8,-10). Find the quadratic and linear coefficients and the constant term of the function.

asked by Caleb on September 24, 2014
12. math

A quadratic function has its vertex at the point (-9,3). The function passes through the point (2,-1). Find the quadratic and linear coefficients and the constant term of the function.

asked by Anonymous on November 21, 2009
13. Maths

It is given a quadratic function y=a(x-h)62+k.If its graph is a parabola with x=2 as its axis of symmetry,and it passes through the two points(3,7)and(4,11) (a)what isthe value of the constant h? (b)find the values of the constants a and k,and write down

asked by Kon on October 25, 2011
14. math

1.How is the maximum or minimum point of the original quadratic function related to the maximum or minimum point of its reciprocal function? 2.How can you use the leading coefficient of the original quadratic function to tell you whether its reciprocal

asked by steven on January 6, 2014
15. Algebra II

asked by JaneLee on November 28, 2007
16. Algebra

Can you please help me with the following problems? Find the coordinates of the vertex for the parabola defined by the given quadratic function. 1.f(x) = (x - 4)2 - 4 Find the axis of symmetry of the parabola defined by the given quadratic function. 3.f(x)

asked by Soly on October 14, 2007

y = 2x^2 I am to decide if this is a linear, quadratic or exponential function. I chose that the above function is quadratic. Am I right?

asked by bart on June 13, 2010
18. algebra

: In case of a quadratic function, why are there two x-intercepts and one y-intercept? Let's say x^2 = y, which is a quadratic function. For every value of y, there are two possibilities for x. For example, if y is 4, x can either be 2 or -2.

asked by jenn on June 28, 2005
19. Math

Make a table and graph each quadratic function. Use integers from -3 to 3 for inputs. #4- y= -x2 #5- y=2x squared #6- y= -8x squared #7- y= x squared + 2 Make a table and a graph for each function. Use only positive values for x. #10- y= 10/x #11- y= 8/x

asked by Math on May 11, 2016
20. precalculus

Are my answers correct if not which are right? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. 1 2 3 5 answer:a Find first differences for the sequence in order from a1 to a5. Determine whether or not the series is quadratic or not.

asked by sally on December 15, 2016
21. Math

I can't remember how you find the roots of quadratic equations other than determining the zeroes of the equation and finding the x-intercepts. Can someone please give me a clear answer on this as my dad has been useless on this topic and I need help like

asked by Alex on November 3, 2014

1.Give a linear function with its zero at x=a, what is the equation of the vertical asymptote of its reciprocal function? 2.Give a quadratic function with its zeros at x=a and x=b, what are the equations of the vertical asymptotes of its reciprocal

asked by Maya on January 6, 2014
23. algebra

1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula. answer=5 plus or minus the square root of 37 over 6 2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0 answer=2 complex 3)Identify the

asked by Marissa on August 14, 2007
24. precalculus

can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] +

asked by Anonymous on December 15, 2016
25. can you check my answers precalculus

can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] +

asked by Anonymous on December 15, 2016
26. Urgent math

A quadratic function is given. f(x) = x2 − 8x + 8 (a) Express the quadratic function in standard form.

asked by Melany on July 22, 2015
27. math

A company has sales (measured in millions of dollars) of 50, 60, and 75 during the first three consecutive years. Find a quadratic function that fits these data, and use the result to predict the sales during the fourth year. Assume that the quadratic

asked by bryant on May 31, 2010
28. Math

The following three points are produced by some quadratic function of the form : f(x) = Ax^2 + Bx + C where A; B and C are real numbers and A = 0; they are (1/2,0);(0,10); and (4,0). Find a quadratic function that satisfy es these three points.

asked by ben on September 19, 2012
29. Pre-Calculus

Find first differences for the sequence in order from a_1 to a_5. Determine whether or not the series is quadratic or not.(I used _ as a sign for a subscript) -1, -3, -1, 5, 15 A. 2, 2, 6, 10; not quadratic B. 2, 2, 6, 10; quadratic C. -2, 2, 6, 10; not

30. Algebra

1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula. answer=5 plus or minus the square root of 37 over 6 2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0 answer=2 complex 3)Identify the

asked by Marissa on August 13, 2007
31. 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 13, 2014
32. Math: Parabola, Vertex

Find the vertex of the parabola associated with the quadratic function. f(x)= -1/7x^2 - 2/11x + 1/121 (h,k)= What is the vertex of this quadratic function?

asked by John on July 13, 2011
33. math

answer the following for the given quadratic function. f(x)=x^2+x^2-8 a. what is the vertex (h,k) of f? (h,k)=? simplify your answer and type the answer in an ordered pair b. what is the axis of symmetry?

asked by Heather on January 1, 2013
34. MATH I just need explanation very easy ( for you)

Why do I get different answer when I use the quadratic equation? In finding the zeros of a function. I used factoring and completing the squares and it gave me the same answer.. How am I going to defend that my answer using quadatic formula is also right ?

asked by Miracle on February 15, 2016
35. Math just explain

Why do I get different answer when I use the quadratic equation? In finding the zeros of a function. I used factoring and completing the squares and it gave me the same answer.. How am I going to defend that my answer using quadatic formula is also right ?

asked by Miracle on February 15, 2016
36. math

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

asked by cj on October 27, 2015
37. math

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

asked by cj on October 29, 2015
38. Algebra

Can someone help me with this question. I thought it was quadratic but now I am not sure. State whether the equation represents a linear, quadratic, exponential function or none of the above. x^2+ 6 = -8 x

asked by Kate on January 14, 2010
39. MATH

The perimeter of a rectangle is 540ft. Let x represent the width of the rectangle. Write a quadratic function for the area of rectangle in terms of its width. Find the vertex of the graph of the quadratic function and interpret its meaning in the context

asked by Anonymous on June 8, 2014
40. math

Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3

asked by Jake on October 16, 2014
41. Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

asked by Charly on June 2, 2011
42. Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

asked by Charly on June 2, 2011
43. Math

A quadratic function is defined by f(x)=-3.7x^2+6.8x+4.2. A linear function is defined by g(x)=-0.5x+k. Determine the value of k so that the line intersects the parabola at exactly one point. Write your answer to the nearest hundredth

asked by Allanna on March 30, 2016
44. math

What function is a quadratic function? A.y=1/y B.y=5x-7 C.y=-x2+2y D.y=|x| Is the answer C?? Thank you

asked by Anono on May 8, 2015
45. Algebra

x^2-2x-8,=0 graph an appropriate quadratic function (x-4)(x+2)

asked by Megan on April 3, 2008
46. Algebra 2

I need to find x of the quadratic function y=-5/3x^2-x-4. I'm supposed to use the formula x=-b/2a. The negative sign only applies to b. A=-5/3 and B=-1. When I substitute these values in I get -(-1)/2(-5/3). After working this out I get 1 over -10 over

asked by Krystal on September 2, 2013
47. precal

A quadratic function has x-intercepts 2 and 6 and its vertex is (4, 8). What is the corresponding quadratic expression?

asked by kodie on May 7, 2014
48. Math

0.08x^3 + 0.6x+2.8 absolute-value function Rational function Another polynomial function Quadratic function

asked by Anonymous on November 23, 2013
49. College Algebra

1.Give a quadratic function q(x) with a vertex of (-1, 2). 2. Give a function h(x) which does not have an inverse function. 3. Give a polynomial function g(x) with zeros 1,2,3 4. Give an exponential function s(x) passing through (0,2) and (4,1). 5. Give a

asked by Chris on July 25, 2014
50. Algebra

Answer the following quadratic function f(x)= x^2 + 6x - 16 What is the axis of symmetry?

asked by Kayleigh on April 9, 2013

Please check my answers. Find the x-intercepts (if any) for the graph of the quadratic function. 1.f(x) = (x + 2)2 - 4 I got (0,0) and (-4,0) Find the y-intercept for the graph of the quadratic function. 5.y + 9 = (x + 3)2 I got (0,0) Find the domain and

asked by Carmen on October 15, 2007
52. Algebra 2

Which quadratic function has its vertex at (2,3) and passes through (1,0)? a. y = 2(x-2)^2+3 b. y = -3(x-2)^2+3 c. y = -3(x+2)^2+3 d. y = 2(x-2)^2-3 Could you explain why you got your answer, too?

asked by Benny on May 29, 2008
53. math

I need help with graphing a quadratic function . . . y = -2x^2 Please don't just give me the answer help me through it. . .

asked by Boobear on March 26, 2013
54. Math

A quadratic function has a vertex of (3,-6) and the point (-1,10) lies on the graph of the function. Write the function in standard form. If you could help me with this question, that would be great. Thanks in advance.

asked by Heaven on April 24, 2016
55. Algebra HELP!

I cannot find an example and am confused about what to do with this problem. Can someone tell me what they want? Do they want me to graph the function and determine x&f? I am just not sure what why my answer is suppose to be. Compare the graph of the given

56. Pre Calc

I am familiar with this type of problem but can't seem to get the right answer. Use the given zero to find the remaining zeros of each function f(x)=x^4-9x^3+7x^2-91x-348,zero 5-2i I normally would use synthetic division with the root 5-2i bringing it down

asked by Zach on November 14, 2009
57. Algebra

Answer the following quadratic function f(x)= x^2 + 6x - 16 a)What is the vertex (h,k)of f? b)What is the axis of symmetry? c)What are the intercepts?

asked by Kayleigh on April 9, 2013
58. Math help and check

Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)? linear **** quadratic exponential none of the above 2. Which kind of function best models the set of data points (–3, 18), (–2, 6),

asked by Kendra on March 9, 2015
59. math

12. Which function is a quadratic function? A. y=3x^2+x B. y=2x-1 C. y=3/x D. y= -|x| Which function rule represents the data in the table? x -3, -2, -1, 0, 1 y 1, -2, -5, -8, -11 A. y=-3x-8 B. y=1/3x -8 C. y=1/3x+8 D. y=3x+8

asked by Anonymous on June 5, 2015
60. Math

Evaluate a Quadratic Function Given an Output Here you will find the input for a quadratic function when the output is given. Check Your Understanding 1. A ball is drop from the top of a building. The height, h, of the ball above ground after t seconds can

asked by IDontKnow on October 11, 2016
61. precalculus

can you check my answers? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. answer: 1 Find first differences for the sequence in order from a1 to a5. Determine whether or not the series is quadratic or not. -1, -3, -1, 5, 15 answer:

asked by Anonymous on December 14, 2016
62. Algebra

Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic

asked by V on October 29, 2006
63. Math

WHICH KIND OF FUNCTION BEST MODELS DATA IN THE TABLE 0 -1,1 -0.5, 2 0, 3 0.5,4 1 I'm thinking quadratic because they are constant 0 1.7,1 6.8,2,27.2,3 108.8, 4 435.2 total confused here the x = 1 but the y's have no real sequence linear no quadratic no

asked by Anonymous on March 23, 2017
64. college algebra

determine the quadratic function f whose vertex is (2,-4) and passes through (3,-1) f(x)= what? type answer in form of f(x)=ax^2+bx-c

65. Algebra

Which is NOT true about the following table. X. 1, 2, 3, 4 Y 1, 4, 9, 16 A. It shows a linear function******** B. x increases by 1 each time C. The rate of change is not constant D. Y increases by a different value each time Write a quadratic function rule

asked by BUBBLES on February 17, 2015
66. algebra

solve the polynomial y=2x^2-4x+1 For Further Reading algebra - Reiny, Thursday, May 17, 2007 at 10:34pm I am sure neither your text nor your teacher asked you to "solve the polynomial y=2x^2-4x+1 " are you graphing the function, or are you solving the

asked by Haylee on May 18, 2007
67. college algebra

find a real-life application of a quadratic function. State the application, give the equation of the quadratic function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the

asked by Renee on October 19, 2008
68. Algebra 2

How are the real solutions of a quadratic equation related to the graph of the quadratic function? Please help? How do I make a real-world situation out of this?

69. calculus

Quadratic function written in standard form where a, b, and c are constants such that a is not zero. f(x)= ax^2+bx+c Using calculus find the vertex of the parabola formed by this quadratic function. Determine under what conditions this vertex is a maximum

asked by Janet on May 9, 2011
70. College Algebra

I could not figure out the answer to this Problem: The quadratic function f(x)= -2x^2 =4x +3 can be used to solve the following inequality: -2x^2 -4x < -3 First use the Quadratic Formula to find the x-intercept of f. This problem asks that the answer be

asked by Lee on October 22, 2010
71. algebra

Hi Dear Jiskha team, I have Algebra homework and I will need some help. The homework is following: Suppose you are using a computer to draw a face on a coordinate plane. The eyes are at (–3, 3) and (3, 3). The tip of the nose is at the origin. To make a

asked by Lily on February 22, 2012
72. Math

I can't seem remember the rules for this.Can someone please help me with the following questions? You can find the roots of a quadratic equation by determining the zeros of the quadratic function or the ...? You can find the roots of a quadratic equation

asked by Alex on November 3, 2014
73. Math

Is this a quadratic or linear function? Identify the quadratic,linear, and constant terms 3(x-2)^2+12x

asked by tyler on November 4, 2009
74. college algebra

Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.

asked by zachary on March 4, 2013

Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=

asked by Jenn on March 16, 2013
76. college algebra

Given the following quadratic equation, find a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.

asked by LISSETT on December 17, 2012
77. Math

Some rational numbers are integers. True or false The radius of a circle and its circumference. Direct or inverse f(x) 0.08x^3 + 0.6x + 2.8 Rational function, another polynomial function Quadratic function.

asked by KGK on November 22, 2013
78. College algebra

Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=

asked by Anonymous on March 15, 2013
79. College Algrbra

Given the following quadratic equation, find a. the vertex b. the axis of symmetry. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function

asked by Sherri on December 18, 2012
80. Math

True or false Some rational numbers are integers. The radius of a circle and its circumference. Direct or inverse f(x) 0.08x^3 + 0.6x + 2.8 Rational function, another polynomial function Quadratic function

asked by KGK on November 22, 2013
81. college algebra

given the folowing quadratic equations find the vertex the axis of symmetry the intercept the domain the range the interval where the function is increasing andthe interval where the function is decreasing graph the function y=X^2+4x

asked by zachary on November 7, 2012
82. Algebra 2

Parabolas - you are my last resort: Find a quadratic function in standard form for each set of points. (0, –4), (1, 0), (2, 2) Can't print answer choices

asked by Sandra on April 15, 2016
83. math

PLease help! anyy would be appreciated !thx what is an example of a quadratic function that touches its axis and also its reciprocal? -discuss about the vertical asymptotes of the reciprocal an why they occur? -what can we say about the vertex of the

asked by jackk on August 27, 2008
84. math,algebra

can someone help me out factor out this 0=16t^2-122t+180 i have so far this but the last one i am not sure 8(2t^2-14t + ?) you need to use the quadratic formula: -b(+or-)[sqrt(b^2-4ac)/2a] so you are saying that i don't have to factor it out any further i

asked by jasmin20 on April 7, 2007
85. algebra

Find the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=2-x^2

asked by sam on July 11, 2010
86. algebra

Find the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=-2x^2+2x+9

asked by sam on July 11, 2010
87. Pre-Calculus

How do I write the quadratic function f(x) = 1/2 (6x^2 - 24x + 22) in standard form, and go about graphing the function?

asked by Alexa :) on August 23, 2011
88. college math

apply the quadratic formula to find the roots of the given function, and then graph the function. f(x) = x2 - 4 g(x) = x2 - x - 12

asked by jennie on December 10, 2010
89. college math

apply the quadratic formula to find the roots of the given function, and then graph the function. f(x) = x2 - 4 g(x) = x2 - x - 12

asked by jennie on December 10, 2010

The reciprocal of a linear function and a quadratic function have the same horizontal asymptote.what is its equation?

asked by Thaya on November 29, 2013
91. algebra

find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=x^2-4x-5

asked by sam on July 11, 2010
92. Math

find the vertex line of symmetry the minimum naximum value of the quadratic function and graph the function f(x)=-2x^2+2x+2.

asked by Allison A on November 29, 2011
93. Quantitative Reasoning ( College Freshman)

For the quadratic function : y=-0.25(x+8)(x-6) write the function in the vertex form y=a(x-h)^2+k by completing the square. Show all work.

asked by Bonni on April 5, 2013
94. Algebra HELP!

I cannot find an example and am confused about what to do with this problem. Can someone tell me what they want? Do they want me to graph the function and determine x&f? I am just not sure how to get my answer. My problem is: Compare the graph of the given

95. Math

Solve for the zeros of the function using the quadratic formula. 3x^2=-4x+6 I know what the quadratic formula is but when I put it into the formula I keep getting an error on the graphing calculator.

asked by M on April 9, 2015
96. math

the graph of a quadratic function has x-intercepts -1 and 3 and a range consisting of all numbers less than or equal to 4. Determine an expression for the function.

asked by shan on September 6, 2008
97. Math

How do you write the transformation of a quadratic function two units right from its parent function? Is it y = (x + 2)^2?

asked by Anonymous on September 15, 2014
98. math

write a quadratic function and an exponential function with a base of 2 whose values at x=5 are between 50 and 64

asked by Anonymous on March 20, 2012
99. Algebra

The vertex of the graph of a quadratic function is (3, 1) and the y-intercept is (0, 10). Which of the following is the equation of the function?

asked by Emma on July 4, 2014
100. Math

This is for grade 11 math, under quadratic extrema and roots. Fred and Ginger have 24 m of fencing to enclose a garden at the back of their house. From the pictures you can see (shows a large rectangle for the house, with a smaller one attached on the

asked by Laura on November 1, 2007