Answer:
See picture below.
Explanation:
The solution to the system of equations is an intersection between two lines. Graphs the lines by converting each to slope intercept form.
2x+y=3 becomes y=-2x+3 which crosses at (0,3) with slope -2.
3y=x-12 becomes y=x/3 -4 which crosses at (0,-4) with slope 1/3.