Answer
$x=\frac{7}{3}$
The line is vertical.
Work Step by Step
$(\frac{7}{3},-8), (\frac{7}{3},1)$
$m=\frac{1-(-8)}{\frac{7}{3}-\frac{7}{3}}$
$m=\frac{9}{0}$
m is undefined
$x=\frac{7}{3}$
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