#### Answer

$y=-10$

#### Work Step by Step

Lines with undefined slopes are vertical (parallel to the y-axis)
Lines perpendicular to them are horizontal (m=0) and have equations of form y=a.
The horizontal line passing through (2, -10) :
$y=-10$

Published by
Pearson

ISBN 10:
0321749006

ISBN 13:
978-0-32174-900-0

$y=-10$

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