You can put this solution on YOUR website! x-6y=9
-6y=-x+9
y=-x/-6+9/-6
y=x/6-1.5 (red line)
2x+3y=-1
3y=-2x-1
y=-2x/3-1/3 (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -x/6 -1.5 and -2x/3 -1/3).
Solution (7/3,-17/9).