Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1 - Linear Functions - 1.5 Finding Equations of Lines - 1.5 Exercises - Page 76: 49



Work Step by Step

2x-5y=40 5y=2x-40 y=$\frac{2}{5}$-8 -4y=10x+10 y=-$\frac{5}{2}$x-$\frac{5}{2}$ The slopes of these two lines are opposite reciprocals of each other so the lines are perpendicular.
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