Question

How do you solve the system `3x-2y= -6` and `-3x-y= -12` by graphing?

Answer 1

Find two solution points for each equation (the intercept points are usually the easiest);

draw the line of each equation using the pair of points you found for each;

trace the point where the lines intersect back to the X and Y-ax es for the coordinates of the intersection.

`3x-2y=-6`
has intercept points: `(x,y)` `=(0,3)` and `(-2,0)`

`-3x-y=-12`
has intercept points: `(x,y)` `=(0,12)` and `(4,0)`

These equations have a mutual solution at `(x,y)=(2,6)`