Answer
$\color{blue}{y=\frac{1}{5}x}$
Work Step by Step
$y$ varies directly with $x$, so the equation that represents the variation is:
$y=kx$
Since $y=2$ when $x=10$ , substituting these into the tentative equation above gives:
$y=kx
\\2=k(10)
\\\frac{2}{10} = k
\\\frac{1}{5}=k$
Thus, the equation of the direct variation is:
$\color{blue}{y=\frac{1}{5}x}$
