Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Entry-Level Assessment - Page xxxviii: 23



Work Step by Step

The slopes of perpendicular lines are negative reciprocals of each other. The negative reciprocal of $5\frac{1}{5}$ is $-5$. Thus, the answer is Option (A).
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