Answer
Never true
Work Step by Step
If two lines have the same slope, the two lines will be parallel. Parallel lines are never perpendicular.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 5 - Linear Functions - 5-6 Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 331: 30
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