#### Answer

$y=3x$

#### Work Step by Step

A direct variation is any equation that can be represented as $y=kx$, where k is the constant of variation.
Thus, one example is: $y=3x$

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$y=3x$

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