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: 16

Answer

$y=7, xy=21$

Work Step by Step

We have to plug in our values to the formula to $xy=k$ That yields, $3/4*28=21$ or the equation is $xy=21$ Plugging in $x=3$, $3y=21$ or $y=7$
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