Answer
a) $f(5)= 3$
b) $f(-3)= 1$
Work Step by Step
a) The graph shows that when $x= 5$, $y= 3$. Therefore:
\begin{equation}
\begin{aligned}
f(5)&= 3.
\end{aligned}
\end{equation} b) The graph shows that when $y= 1$, $x= -3$. Therefore:
\begin{equation}
\begin{aligned}
f(-3) & =1.
\end{aligned}
\end{equation}
