You can
put this solution on YOUR website!3x-6y=9
-6y=-3x-9
6y=3x+9
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x-2y=3
-2y=-x+3
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(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 6y = -3x +9 and -2y = -x +3).