Answer
$k=1/6$ (constant of variation)
$y=1/6*x$
Work Step by Step
Y varies directly as x
$x=30$, $y=5$
$y=kx$
$5=k*30$
$5/30=k*30/30$
$1/6=k$
$k=1/6$ (constant of variation)
$y=1/6*x$
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