SOLUTION: A line passes through the point(x,y)=(-4,8)and has a slope of -7 . Write an equation for this line. Can anyone help?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A line passes through the point(x,y)=(-4,8)and has a slope of -7 . Write an equation for this line. Can anyone help?      Log On


   

Question 185783: A line passes through the point(x,y)=(-4,8)and has a slope of -7 . Write an equation for this line.

Can anyone help?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

A line passes through the point(x,y)=(-4,8)and has a slope of -7 .
.
Via Slope-Intercept Form: y=mx%2Bb
8=%28-7%29%28-4%29%2Bb
8=28%2Bb
b=8-28=-20, Y-Intercept
Therefore, the line eqn follows---->highlight%28y=-7x-20%29
Std Form---->highlight%287x%2By%2B20=0%29
We see the graph,

Thank you,
Jojo