You can put this solution on YOUR website! a)y=3/2x-3 (red line)
b)y=-x+4 (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 3x/2 -3 and -x +4).
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c)y=2/3x+3 (red line)
d)y=-4x-1 (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x/3 +3 and -4x -1).