Answer
See graph.
Work Step by Step
We graph:
$f(x)=\left\{\begin{array}{l}
-\frac{1}{2}x^{2}+2 ~~~\mathrm{i}\mathrm{f}\ x\leq 2\\
\frac{1}{2}x~~~~~~~~~~~~~~~\mathrm{i}\mathrm{f}\ x\gt 2
\end{array}\right. $
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