Saturday

August 2, 2014

August 2, 2014

Number of results: 32,425

**Calculus**

Could really use a lot of help here what is the slope of the tangent line to cos(x-y)=xe^x at point (0,3pi/2)
*February 15, 2012 by Johnathan*

**calculus anti-derivation**

Given that the graph of f(x) passes through the point (2,5) and that the slope of its tangent line at (x, f(x))is 3x+5, what is f(3) ?
*April 14, 2012 by lindsay*

**Math**

Find the slope of the tangent line to the curve 0x^2−2xy+2y^3=10 at point (-4,1) Help please? Thanks in advance
*November 17, 2012 by Ali*

**calc**

Find the slope of the tangent line at (8,8) for the function (16-x)y^2=x^3 Round your answer to two decimal places.
*October 24, 2013 by math*

**calculus**

Describe the slope of the tangent line to the curve defined by x 2 + xy - y 2 = 5 when x = 2. positive negative zero undefined
*February 23, 2014 by shira*

**Calc 2**

Find the length of the curve y^2=x^3 from the origin where the tangent line makes an angle of 45 degrees with the x-axis.
*February 26, 2014 by Chelsea *

**math**

Find an equation of a line that is parrellel to the line of each equation: y=2x-7 y=-4x+5 y=x-3
*April 25, 2008 by Marianna*

**precalc**

I;m not sure if i am doing this right...I keep getting a negative intersection point, which doesn't seem possible. Please help! a) find the equatoin of line 1 which passes through (1,3) and (9,7) I get y=3+1/2(x+1)or y=1/2x+2.5 b) the line 2 is perpedicular to line 1 and ...
*September 10, 2012 by Anonymous*

**math/algebra1a**

Write the equation of the line passing through (-3, -5)and (3,0). (a)y= -6/5x - 5/2 (b)y= 5/6x - 5/2 (c)y= 5/6 x + 2/5 (d)y= -6/5x + 2/5 You have to get the slope of the line using equation y2-y1/x2-x1. [0-(-5)]/[3-(-3)] = 5/6 Now that you have the slope, you have to solve for...
*May 26, 2007 by Confused*

**algebra**

Which choice is the equation of a line that has a y-intercept of 7 and is parallel to the line represented by this equation? y = 6x− 5 A. y = 6x+ 7 B. y = 6x− 7 the other two answers pertain to perpendicular lines, so i excluded them. i was going to select B, but ...
*November 10, 2013 by caduceus*

**math**

4 sqrt(3) minus sqrt(64) plus 6 sqrt(27)
*May 27, 2008 by jaydee*

**algebra**

simplify: sqrt (90) a) 30 b) 3 sqrt (10) c) 10 srt (3) d) 9 sqrt (3)
*June 22, 2010 by sean*

**math**

simplify: sqrt 18/50 Would it be sqrt 18 / sqrt 50
*July 4, 2010 by Hannah*

**Math: Factoring**

3(1+x)sqrt 1/3 -x(1-x)sqrt -2/3 -------------------------------- (1+x) sqrt 2/3 please help
*September 15, 2011 by Ashley*

**math**

Simplify each of the following: 1. 16*(2^x)+2 2. 3[sqrt(x^1/4)*sqrt(x)/5*sqrt(x^2)] 3. ab^(2x+y)/a^x b^x
*May 28, 2012 by noel*

**math 116**

a water line is given by the equation y = - 2/3x - 12 . Suppose you want to put a pink flamingo lawn ornament in your backyard, but you want to avoid placing it directly over the water line, in case you need to excavate the line for repairs in the future. Could you place it at...
*October 5, 2008 by Carmen*

**Math**

Let AB be the diameter of circle Γ1. In the interior of Γ1, there are circles Γ2 and Γ3 that are tangent to Γ1 at A and B, respectively. Γ2 and Γ3 are also externally tangent at C. This exterior tangent cuts Γ1 at P and Q, with PQ=20. ...
*May 5, 2013 by Mathslover Please help*

**alg.**

Write the equation of the line that passes through point (2, –6) with a slope of –5. I think this is a pretty easy problem, but I'm making it out to be harder than it really is. here is what I got: y=mx+b -6=-5(2)+b -6=-10+b =10 =10 b=4 the equation that I got is: y=-5x+4 is ...
*July 30, 2007 by lacy*

**calculus**

1. Given the curve a. Find an expression for the slope of the curve at any point (x, y) on the curve. b. Write an equation for the line tangent to the curve at the point (2, 1) c. Find the coordinates of all other points on this curve with slope equal to the slope at (2, 1)
*December 3, 2011 by Fareha*

**Algebra-Please check**

1. solve sqrt (11-x) = sqrt(x-7) choices are 6,7,8 or9 I think according to my calcs the answer is (9) The range of f(x) = sqrt(3x-6) - 2 answers would be y<= (-2) y>= (-2) y> (-2) y<=(2) I think the answer is y <= -2, correct I don't get this one at all: Solve...
*January 8, 2011 by Erica*

**calculus**

integration by parts: 1. e^(sqrt(3x+9)) 2. sin(lr) are the answers: 1. 2e^(sqrt(3x+9))(sqrt(3x+9)-1) + C 2. -r cos(lnr) + sin(lr) + C
*May 27, 2007 by cory*

**math**

integration by parts: 1. e^(sqrt(3x+9)) 2. sin(lr) are the answers: 1. 2e^(sqrt(3x+9))(sqrt(3x+9)-1) + C 2. -r cos(lnr) + sin(lr) + C
*May 28, 2007 by cory*

**algebra**

Solve: sqrt (3)b + sqrt (2) = sqrt (7)b - 10 a) none b) (3) c) (-3) d) (-4) i need to know if my answer is correct or not and the answer i picked is a thanks
*June 23, 2010 by kiddo*

**algebra**

Solve: sqrt (3)b + sqrt (2) = sqrt (7)b - 10 a) none b) (3) c) (-3) d) (-4) i need to know if my answer is correct or not and the answer i picked is a thanks
*June 24, 2010 by kiddo*

**Statistics**

σ = sqrt[ P * ( 1 - P ) / n ] = sqrt [(0.8 * 0.2) / 100] = sqrt(0.0016) = 0.04 z = (p - P) / σ = (.73 - .80)/0.04 = -1.75. What type of formula is this problem?
*May 4, 2014 by Linda*

**Maths**

what is the equation for the tangent to the curve 6y=7-x^3 at (1,1)?
*April 19, 2012 by its urgent!!!!!!!!!!*

**Calculus**

I asked for help on a question yesterday and I got really good help and I was wondering if someone could help with this problem too. This is the question: Find an equation of the line through the point (1,3) that cuts off the least area from the first quadrant. My work on the ...
*November 12, 2006 by Kristal*

**calculus**

let f(t) = 2*pi*t + sin(2*pi*t) a) find value of t in open interval (0,2) for which the tangent line at (t, f(t)) is parallel to the line through (0,0( and (2, 4pi) b) suppose the given funtion describes the position of a particle on the x-axis for 0<= t <= 2. What is ...
*November 1, 2011 by zoe*

**Pre-calc Solve logarithmic **

ln sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation? then i subtract 8 from both sides ln x = 17 e^(ln x)= e^17 e ...
*October 30, 2013 by Marcos*

**Physics**

can someone help i'm stuck on two questions??? 23. On a velocity-time graph, when is the object not moving? when the slope is a straight line rising to the right when the slope is a straight line falling to the right when the slope is a line curving upward to the right at the ...
*October 12, 2013 by Mary Ann*

**HELP WITH ALGEBRA!!**

6. What happens to the graph of the line y = 3x -2 when the equation is changed to y = 3x +6? Look at the general equation for a straight line. It is y = mx + b where m is the slope and b is the y intercept. Therefore, the line crosses the y axis at -2 in the first equation ...
*November 1, 2006 by Margie*

**Calculus**

Find the area cut off by x=4 from the hyperbola x^2/9-y^2/4=1. Answer is 4.982 in the book. I have proceeded as under: Y=2/3*sqrt(x^2-9) and rhe reqd. area is double of integral 2/3*sqrt(x^2-9) from 3 to 4. Int= 2/3*[xsqrt(x^2-9)/2 – 9/2*log{x+sqrt(x^2-9)}] from 3 to 4 =x/...
*March 28, 2014 by MS*

**math **

The equation of line AB is (y-3) = 5 (x - 4). What is the slope of a line perpendicular to line AB?
*February 27, 2014 by krista*

**Maths**

Hi How can we get an equation for a straight line cause I went in many websites and nothing suited me thankx The equation for a straight line is: a x + b y + c = 0
*May 30, 2007 by Welsh*

**maths**

the straight line l1 has equation y=2x+3 the straight line l2 is parallel to l1 l2 passes through the point (3,2) find an equation for l2
*October 23, 2008 by alex*

**math**

Find an equation of the line having the given slope and containing the given point. m= -3, (1,3) The equation of the line is y =
*September 10, 2010 by SchuRonda*

**math**

Find an equation of the line having the given slope and containing the given point. m= -3, (1,3) The equation of the line is y =
*September 10, 2010 by SchuRonda*

**Algebra**

Find an equation of the line having the given slope and containing the given point. m=7/8, (5,-6) The equation of the line is y=?
*May 24, 2011 by Ann*

**Algebra**

Find an equation of the line having the given slope and containing the given point. M=6/7, (5,-2) The equation of the line is y =
*February 11, 2014 by Pam*

**Algebra**

Find an equation of the line having the given slope and containing the given point. M=4/5,(3,-1) The equation of the line is y=
*February 12, 2014 by Pam*

**Algebra**

Find an equation of the line having the the given slope and containing the given point. M=4/5,(7,-4) The equation of the line is y=?
*February 13, 2014 by Pam*

**college algebra**

1. for the given slope-inntercept equation of the line with the following properties parallel to the line y=7; containing the (-3,5) 2. write the equation of the circle in standard form. find the center, radius, intercepts. x^2+y^2+16x-18y+145=25 please show work
*December 3, 2012 by confused-steve please*

**math**

1. The x-intercept of a line is -3. The y-intercept of a line is 6. What is the slope of the line? 2. What is the equation in slope-intercept form of the line described in Exercise 1? can you please explain and answer it?? im having lots of trouble with this. it's urgent... ...
*May 3, 2009 by xxx*

**12th Grade Calculus**

1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3 - 9x + 5 at the point (3,5) [* for a. the answer that I obtained was y-5 = -1/18 (x-3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve have this slope? c.) ...
*November 28, 2010 by Eliza*

**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, it's a function and if...
*March 20, 2007 by Mimi*

**calculus**

the tangent line to the curve y=1/3(x^3)-3x^2+11x+15 is parallel to the line 9x-3y=2 at two points on the curve.Find the two points.
*December 13, 2010 by Joseph*

**math-calc**

show that 1-(x/2) is the tangent line approximation to 1/sq rt(1+x) near x=0 i know the formula for apprx. is y = f(a)+f'(a)(x-a) but i don't understand how to work backwards to get this.
*October 19, 2008 by joe*

**Physics**

Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10.
*February 2, 2010 by Kassie*

**Physics**

Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10.
*February 2, 2010 by Kassie*

**Calculus**

Could you please help me with this question: Determine the values of x so that the tangent to the function (y=3/cubic root of x) is parallel to the line x+16y+3=0 Thank you
*February 18, 2010 by Kenny*

**calculus please help**

Use the four step process to find the slope of the tangent line to the graph at any point: f(x) = -1/2(x^2)
*February 11, 2011 by Anonymous*

**calculus**

Gah. Struggling over this for the past 20 minutes... Find the slope of the line tangent to the curve y=1/x at the point (2,0.5).
*September 24, 2011 by Anonymous*

**Calculus AP need help!**

i dont know how or what to starts Find the slope of the tangent line to the curve 4x^2+3xy+3y^3=-251 at the point (-4,-5)
*February 29, 2012 by stacey*

**Calculus AP **

implicit differentiation Find the slope of the tangent line to the curve xy^3 + 2y - 0.76 =0 at the point (-3, o.7) I'm lost. so 3xy^2 * y' + 2y = 0 right?
*March 1, 2012 by karen*

**Calc 3**

Find parametric equations for the tangent line to the curve of intersection of the paraboloid z = x^2 + y^2 and the ellipsoid 6x^2 + 5y^2 + 7z^2 = 39 at the point (−1, 1, 2)
*September 28, 2012 by Becky*

**Logarithms**

I'm working on logarithmic equations and I'm stuck on how my book arrives at the next step. First, they use the change of base formula on, log(sqrt(2))(x^3 - 2) (sqrt(2)) is the base,changing to base 2 log(sqrt(2))(x^3 - 2)= log2(x^3 - 2)/(log2(sqrt(2)) I understand that part...
*March 9, 2011 by Helper*

**calculus**

Determine whether the graph of the equation is symmetric with respect to the x-axis, y-axis, line y=x, line y=-x, or none of these. x+y=6 Do I have to move the y and 6 to the other side of the equations or does it not matter? Also, if I do, when I test using the equation a^2...
*August 11, 2010 by James*

**calculus**

a) If x3 + y3 - xy2 = 5, find dy/dx. (b) Using your answer to part (a), make a table of approximate y-values of points on the curve near x = 1, y = 2. Include x = 0.96, 0.98, 1, 1.02, 1.04. (c) Find the y-value for x = 0.96 by substituting x = 0.96 in the original equation and...
*March 13, 2013 by Anonymous*

**MATH**

if line segment AC =120ft and the ratio of line AB:line BC=3:5, what is the length of line AB ? I set up the equation as x:120,3:5 x/120=3/5 3/120=360, 360 divided by 5=72 the answer in the book is 45, need help
*October 27, 2008 by Rose*

**Geometry**

How do I find the distance between (-9,3) and (-1,-5) By using the Pythagorean theorem. The line between the two points is the hypotenuse of a triangle with perpendicular side lengths of 8 in the x direction and 8 in the y direction. The 8's come from the differences in x and ...
*June 14, 2006 by Kasey*

**Math (Trig)**

I have a unit circle graph like the one at the top of a website (do a google search for 'unit circle trig functions' and click the second link, since I can't post links). I need to label the sine, cosine, tangent, secant, cosecant, and cotangent. I found several pictures that ...
*March 18, 2007 by Chris*

**Calculus**

Let f be the function given by f(x)=(x^3)/4 - (x^2)/3 - x/2 + 3cosx. Let R be the shaded region in the second quadrant bounded by the graph of f, and let S be the shaded region bounded by the graph of f and line l, the line tangent to the graph of f at x=0. Graph shown through...
*February 27, 2013 by Jessy152*

**algebra**

how would i find an equation of a line that goes through points(1,6) and (3,10)?? thanks A straight line is y=mx+b Substitute the points to make two equations. 6=m(1)+b 10=m(3)+b Two equations; two unknowns, m and b. Solve for m and b, then plug back into y = mx + b. That will...
*December 22, 2006 by jasmine*

**Math help plz ASAP.**

Rationalize each denominator. 6 + square root of 2 ____________________________ square root of 3 PLZ HELP..dont kno how to do this question.plz explain..thanks You have (6 + sqrt(2))/sqrt(3) multiply that by sqrt(3)/sqrt(3) to get [(6 + sqrt(2))*sqrt(3)]/3 and simplify To ...
*October 15, 2006 by Karla*

**Math**

Here is the question: Is the product of two irrational numbers always an irrational number? Justify your answer. My answer is: No. The square root of two is an irrational number. If you multiply the square root of two by the square root of two, you get two which is a rational ...
*July 7, 2009 by B.B.*

**Integrals- Log/Ln**

Can you check this please i'm not sure why it's wrong .__. 1) indefinite integral of 1/t *ln(t) dt the t*ln(t) is altogether on the bottom i got ln(ln(x)) + C 2) find the indefinite integral of 1/(sqrt(t)*[1-2*sqrt(t)]dt sqrt(x) is on the bottom. i got -ln(1-2*sqrt(t))+C can ...
*May 24, 2013 by Erika*

**Math**

1. Determine the equation of the right bisector of the line segment E(2, 6) and F(4, -2). Draw the diagram. 2. Given three points D(2, 5) E(-2, -3) and F(4, -6) determine whether or not the line through D and E is perpendicular to the line through E and F. 3. A triangle is ...
*June 30, 2014 by Madeline*

**Math**

How do I find the equation of a tangent of y=cos(2x+(pi)/3) at x=(pi)/4
*August 17, 2010 by Kayla*

**Calculus**

if x=e^t and y=(t-3)^2 , find an equation y=mx+b of the tangent to the curve at (1,9).
*March 12, 2011 by Allison*

**maths**

1) Circle centre (7,-2) passes through (-2,10). Calculate radius and find equation of circle. 2) AB is diameter of circle A(9,5) B(-1,-7). Find equation of circle mid point. I know i have to use the eqn (x1+x2)/2 and (y1+y2)/2 3) Find the equation of circle with centre (-8,5...
*February 24, 2008 by Anonymous*

**Calc**

1. The problem statement, all variables and given/known data cos(x) = -2 I was trying to solve that problem ignoring what people say about it not being defined and got a number strangely. I showed step by step so you can tell me what I did wrong as I don't think I did anything...
*July 27, 2010 by Kate*

**CALC**

1. The problem statement, all variables and given/known data cos(x) = -2 I was trying to solve that problem ignoring what people say about it not being defined and got a number strangely. I showed step by step so you can tell me what I did wrong as I don't think I did anything...
*July 27, 2010 by Kate*

**Math 101**

Find the equation for each of the following items below: a. A line that passes through (6,26) and has a slope of 3. b. A line that passes though the points (5,5) and (10,20) c. A line that passes through (9,25) and has a slope of -3. d. A line that passes through (1,1) and is ...
*March 23, 2010 by SEMA , Need Help*

**calculus**

Please help, my live tutor and I could spent 2 hours trying to solve these two: find an equation for tangent line y=-1-8^2@ (-4,-129) find the derivative of the function:----we both kept getting the same answer, but Mathlab kept saying that it was wrong: -4lnl3xl/2+3x we did ...
*April 25, 2008 by Pam*

**math**

first was w=Cr^-2 solve for r I came up with r=sqrt of C/w Now I have imputed numbers that were provided to come up with the equation 3,963=sqrt c/100 I squared both sides to come up with 15,705,369=c/100 Now I am stuck. Trying to solve for C. Am I on the right track?
*February 27, 2008 by avincent*

**Chemistry**

I am unsure exactly how to set up this calculation. From a graph that we got from getting different absorbances we took those points we got and got a equation for the best fit line. The equation was y = 760.8x + .02014 and the unknown absorbance equalled .254. We than wanted ...
*April 5, 2009 by eliz*

**Trigonometry**

"Sketch the graph of y=tan(x/2) By solving the equation x/2=-pi/2 x=- pi and the equation x/2=pi/2 x=pi..." Before I go any further, I need to understand where these equations came from. Where does the pi come from out of thin air? What becomes of the tangent? Can you please ...
*January 24, 2010 by Ellyn*

**Math-Fast pleasee :]**

Which of the following is the equation for a line parallel to the y-axis & passing through (3,2)? a) x=3 b) y=2 c) y=3/2 D) x=2/3 I know in slope intercept form it would be y=mx+b. But how do i do this in standard form? any vertical line has the equation in the simple form x...
*May 8, 2007 by Emily*

**Math - Solving equation (check )**

7 = (210+88t)/(2(sqrt(210t+44t^2))) Is t= 1.0479....? I got the denominator multiplied by 7 and squared both sides to eliminate the sqrt and then simplified, used the quadratic formula to find the values but since the questions is about squirrels growth it can not be a ...
*October 22, 2010 by Anonymous*

**Linear Equations**

Directions: Use what is given to write an equation of a line in STANDARD, SLOPE-INTERCEPT, AND POINT-SLOPE form. 1. m = 3 (0,4) s=B4=3 si=3x+4 ps=y-4=3x Are we doing these correctly? I do not know what those forms mean, but if the line goes through (0,4) with slope 3, the ...
*December 20, 2006 by Valerie*

**Please check my maths?**

How should i do this question?? it says: find the equation of the tangent to the curve y=(x-2)^3 at the point (3,1). calculate the coordinates of the point where this tangent meets the curve again. I know how to get the first part, if i'm not wrong, it's y = 3x - 8 but no ...
*June 19, 2009 by holly*

**math,help**

this is what i have left but i don't know how to finish it. THe length of a rectangle is 1cm more than 4 times its width. if the area of the rectangle is 74cm^2, find the dimensions of the rectangle to the nearest thousandsth. so then: a =Lw A = 74 W= W L=4W+1 FROM ALL THIS I ...
*April 15, 2007 by jasmine20*

**calc**

Consider the following function. f(x) = 4x3 + x2 - 0.05x + 10 Find the two points on the graph at which the tangent line is horizontal. G
*September 30, 2010 by Anonymous*

**calculus**

use implcit differenciation to find an eqaution of both the tangent line to the ellipse: 2x^2 + 4y^2 = 36 that passes through the points: 14,3
*October 19, 2010 by mike*

**calculus**

Consider the function f(x)=In(x^2+1). Calculate the slope of the tangent line at the point (2,ln(5)). Round your answer to two decimal places.
*March 12, 2011 by Abnerbell*

**Calculus grade 12**

find the coordinates of all points on the graph of f(x) = x + 2cos(x) in the interval [0, pie] at which the tangent line is horizontal.
*April 12, 2012 by Julie*

**Calculus grade 12**

find the coordinates of all points on the graph of f(x) = x + 2cos(x) in the interval [0, pie] at which the tangent line is horizontal.
*April 12, 2012 by Julie*

**Calculus**

The line y=2x+b is tangent to the graph of y=x^1/2 at the point P=(a, a^1/2). Find P and determine b. I don't know what to do because they don't give you the x coordinate or anything to plug into the derivative. Help?
*September 20, 2012 by Macy*

**Math - PreCalc (12th Grade)**

What is the slope of the tangent line passing through the point (2, 3) of the graph of this function? f(x)=x^2+2x−5 A) 1 B) 2 C) 3 D) 4 E) 6 f(2)=2^2+2(2)-5 f(2)=3 so is it c?
*March 20, 2014 by Shawna*

**Calculus**

Let f be the function defined for x >or= to 0 with f(0)=5 and f', the first derivative of f, give by f'(x)=e^(-x/4)sin(x^2). A) Use the graph of f' to determine whether the graph of f is concave up, concave down, or neither on the interval 1.7<x<1.9. Explain your ...
*February 9, 2011 by Leanna*

**Calculus**

This is a large problem, sorry for the trouble. if f(x) = sqrt(x^3 + 5x + 121)(x^2 + x + 11) Find fprime/derivative of/at 0 I keep getting 16 which is not one of the multiple choice answers available. My last step is [sqrt(121)(1)] + [{5/sqrt(121)}(11)] What am I doing wrong?
*October 29, 2008 by Anonymous*

**Precalculus**

1. Consider the curve y=x^2. a. write down (dy)/(dx) My answer: 2x The point P(3,9) lies on the curve y=x^2. b. Find the gradient of the tangent to the curve at P. My answer: 2*3=6 c. Find the equation of the normal to the curve at P. Give your answer in the form y=mx+c. My ...
*April 14, 2014 by Anonymous*

**math**

1)what equation represents a line that is perpendicular to the line whose equation is -2y=3x+7? 2)if the measures of the angles of a triangle are reprsented by 2x, 3x-15, and 7x+15, is the triangle an acute triangle?
*April 7, 2009 by jerry*

**Quick math help**

My math exam is coming up Friday and I need help!! Can you please guide me throgh the processes on the three questions? Thank you so much greatly apreciate it!! Write the standard form of the equation of each line given the slipe and y-intercept. 1. Slope= -1/5, y-intercept=0 ...
*December 17, 2013 by Anonymous*

**differantiation**

Determine dy/dx if: (i) Y= sqrt x^sqrt x (ii) Y= xarcsin(x) + sqrt(1-x) Please show all steps. Thanks 1) http://www.analyzemath.com/calculus/Differentiation/first_derivative.html 2) an antiderivative of arcsin(x) is xarcsin(x)-sqrt(1-x^2); are you certain the second term is ...
*August 12, 2006 by Ruth*

**math**

I need help with this question. Write the equation of the line which contains the point)0, -3) and whose slope is 4. A general line equation can be written as y = mx + c, where m is the slope and c a constant. so we can write this as y = 4x + c Substituting the point (0, -3) ...
*April 18, 2007 by Taylour*

**Pre-Calc**

Could somebody please check this for me? Dtermine whether the graph of each equation is symmetric with respect to the origin, the x-axis, the y-axis, and the line y=x or the line y=-x. I came up with the line being symmetric to the x-axis, the y-axis, and the line y=x. I'm not...
*October 8, 2007 by Natalie*

**got a couple of calculus questions**

1. What is the equation of the tangent line to y = 2*x(x - 4)^6 at point (5, 10)? 2. If f(x)=8/(x^2+4) , find the slope of the curve at the point (2, 1). 3. The demand function for an item is given by x=200[1-(p/(p+2))] . At what rate is the demand changing when the price p is...
*July 9, 2006 by annie*

**Math**

If line g passes through point (2, 2) and is perpendicular to the line h, then what is the equation of line g? With h passing through two points (1, 2) and (3, 6)
*January 25, 2011 by jack*

**Calculus**

Find an equation for the tangent and normal to the curve x^2 + y^2 = 9 at x=1
*October 4, 2007 by Matt*

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