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: 52

Answer

perpendicular

Work Step by Step

y=-$\frac{1}{3}$x+2 y+7=4(x+3)-x y=4x+12-x-7 y=3x+5 One equation has a slope of -$\frac{1}{3}$ and the other has a slope of 3. Since these numbers are opposite reciprocals of each other, the lines are perpendicular.
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