#### Answer

The constant of variation is $3$.
The variation equation is $y=3xz^3$.

#### Work Step by Step

$y=kxz^3$
$y=120;x=5;z=2$
$120=k(5)(2)^3$
$120=k(40)$
$k=3$
$y=3xz^3$
The constant of variation is $3$.
The variation equation is $y=3xz^3$.

Published by
Pearson

ISBN 10:
0321726391

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

The constant of variation is $3$.
The variation equation is $y=3xz^3$.

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