Question

What is the slope intercept form that passes through the given point and is perpendicular (-8,5),y=-4x+2? What is the answer?! Help!! :)

Answer 1

right, so we are after an equation that is perpendicular to y=-4x+2 isnt it?

Answer 2

m1*m2=-1 .. we can find the gradient of the perpendicular line through this equation.
we know m1=-4
so then
-4*m2=-1.

what would be m2 (or the gradient of the perpendicular line)

Answer 3

But what would the answer be?

Answer 4

i am working through the ans with you. first we need to gradient of the perpendicular line. which is my prev post. would u be able to tell me what m2 is.

Answer 5

can u see that using the equation

Answer 6

m1*m2=-1
-4*m2=-1
therefore, m2 must be (1/4)

are u with me on that

Answer 7

Y=1/4+x answer?

Answer 8

y=(1/4)x+c is the equation. now we need to use the coordinate( -8,5) to compete the equation and find c

Answer 9

using the coordinate, i am going to substitute in the x and y values to solve for c

5=(1/4)(-8)+c

now we solve for c, which is the y intercept or constant
5=(-8/4)+c
5=-2+c
c=7

y=(1/4)x+7