Find the slope of the perpendicular bisector — task. Mathematics State Board, Class 10.

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If the slope of the line

$PQ$ is

$- \sqrt{17}$ , then the slope of the perpendicular bisector of

$PQ$ is:

$\frac{1}{\sqrt{17}}$
$\frac{1}{17}$
$- \frac{1}{\sqrt{17}}$
$17$
$\sqrt{17}$

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