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) :
$y=-10$
Calculus with Applications (10th Edition)
by Lial, Margaret L.; Greenwell, Raymond N.; Ritchey, Nathan P.
Published by
Pearson
ISBN 10:
0321749006
ISBN 13:
978-0-32174-900-0
Chapter 1 - Linear Functions - Chapter Review - Review Exercises - Page 40: 29
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