Answer
$G$
Work Step by Step
We can see from the graph that it represents the absolute value function, $f(x)=|a|$ because it shown an increasing line with slope $1$ from $0$ to $\infty$ and a decreasing line with slope $-1$ from $-\infty$ to $0$. In other words, it matches the following piecewise function:
$f(x)=|a|=\left\{\begin{array}{ll}
-a & a\lt0 \\
a & a\gt0
\end{array}\right.$
So, the matching graph is $(g)$.
