Answer
Refer to the graph below.
Work Step by Step
The inequality involved is less than so an open circle will be used.
Use $0$ as a test number:
$\begin{align*}
r&<\frac{1}{2}\\
0&<\frac{1}{2}
\end{align*}$
The statement above is true.
Since $0$ is to the left of $\frac{1}{2}$, then shade the region to the left of $\frac{1}{2}$.
Refer to the graph below.
