Answer
$y=\frac{5}{x}$
Work Step by Step
As $x$ increases, $y$ decreases:
$y=\frac{k}{x}$
Now choose any point. Let's use $(5,1)$:
$5=\frac{k}{1}$
$k=5$
The variation model:
$y=\frac{5}{x}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 3 - 3.5 - Mathematical Modeling and Variation - 3.5 Exercises - Page 295: 35
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