Question 1144059

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1st scenario, 
m = -2, (-1,3) 
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{{{-2=(y-3)/(x-(-1))}}}

{{{-2=(y-3)/(x+1)}}}

{{{-2(x+1)=y-3}}}

{{{y-3=-2x-2}}}

{{{highlight(y=-2x+1)}}}