Answer
The product of the slopes of two perpendicular, non-vertical lines is -1.
Work Step by Step
We know from previous exercises that if we examine the slopes of two perpendicular, non-vertical lines, the product of the slopes must be -1.
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter 2 - Section 2.5 - Equations of Lines and Linear Models - 2.5 Exercises - Page 230: 75
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