Answer
$1$
Work Step by Step
$\frac{dy}{dx}$ = $\frac{dy}{du}$$\frac{du}{dx}$
$\frac{dy}{du}$ = $(\frac{1}{5})$
$\frac{du}{dx}$ = $(5)$
$\frac{dy}{dx}$ = $(\frac{1}{5})(5)$ = $1$
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