Answer
$-3$
Work Step by Step
$m_{1}$ must be equal to $m_{2}$
$m_{1}$=$\frac{-3-2}{2-3}$=$\frac{-5}{-1}$=$5$
$m_{2}$=$\frac{4+1}{-2-x}$=$\frac{5}{-2-x}$
$\frac{5}{-2-x}$=$5$
-10-5x=5
5x=-15
x=-3
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