Algebra 2 (1st Edition)

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

Chapter 8 Rational Functions - 8.1 Model Inverse and Joint Variation - 8.1 Exercises - Skill Practice - Page 555: 30



Work Step by Step

$z=axy$, where a is the constant of variation. We rearrange to get $a=z/(xy)$ Plugging in our variables $ y=-4, x=-3, z=-36$ $a=-36/[(-4)*(-3)]$ or $a=-3$
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