Answer:
y= 3x m= 3, b= 0
y= -1.5x-4 m= -1.5, b= -4
y= 1.5x-7 m= -1.5, b= -7
y= 7 m= 0, b= 7
y= -3x +4 m= -3, b=4
Hope this helps..
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