#### Answer

$0.625$

#### Work Step by Step

To find $y$ when $x=5$, set up a proportion. Since $y$ varies directly with $x$, use two forms of $\frac{y}{x}$ in the proportion.
$\frac{\frac{1}{2}}{4}=\frac{y}{5}$
Now write the cross products.
$\frac{1}{2}(5)=4y$
Simplify.
$2.5=4y$
Divide each side by 4.
$\frac{2.5}{4}=\frac{4y}{4}$
Simplify.
$0.625=y$