Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - 2.3 Graph Equations of Lines - 2.3 Exercises - Quiz for Lessons 2.1-2.3 - Page 96: 5

Answer

perpendicular

Work Step by Step

By using the slope formula, the slopes of the lines are: $m_1=\frac{y_2-y_1}{x_2-x_1}=\frac{7-(-2)}{2-(-1)}=\frac{9}{3}=3.$ $m_2=\frac{y_2-y_1}{x_2-x_1}=\frac{-6-(-3)}{3-(-6)}=\frac{-3}{9}=\frac{-1}{3}.$ Since $m_1m_2=-1$, they are perpendicular.
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