Answer
See explanation.
Work Step by Step
Given the relation $z=kx^2\sqrt y$, we can say that $z$ is proportional jointly with the square of $x$ and the square root of $y$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 2 - Section 2.8 - Modeling Using Variation - Exercise Set - Page 425: 46
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