#### Answer

$x=kyz$

#### Work Step by Step

Because $x$ varies jointly as $y$ and $z$, we equate $x$ to a constant multiple of $y$ and $z$:
$x=kyz$.

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$x=kyz$

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