SOLUTION: Graph the equation 3x-4y=-12 using intercepts.

Algebra ->  Graphs -> SOLUTION: Graph the equation 3x-4y=-12 using intercepts.      Log On


   



Question 471810: Graph the equation 3x-4y=-12 using intercepts.
Answer by Edwin McCravy(20059) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute 0 for x to find the y-coordinate of the y-intercept:
3x - 4y = -12
3(0) - 4y = -12
-4y = -12
%28-4y%29%2F%28-4%29+=+%28-12%29%2F%28-4%29
y = 3
So the y-intercept is (0,3)
Plot that point on the y axis:

Now substitute 0 for y to find the x-coordinate of the x-intercept:
3x - 4y = -12
3x - 4(0) = -12
3x = -12
%283x%29%2F3+=+%28-12%29%2F3
x = -4
So the x-intercept is (-4,0)
Plot that point on the x axis:

Get a ruler and draw the line through those two points: