Answer
Refer to the image below for the graph.
Work Step by Step
$g(x) = f(x)-1$ means that the function $g(x)$ involves a vertical shit of 1 unit downward of the function $f(x)$.
This means that the points of $f(x)$ will be moved 1 unit downward to find the corresponding points in $g(x)$.
Doing this gives the points:
$(-2, 1)$, $(0, 1)$, and $(,2, 1)$
Plot these points then connect the using a line segment.
(refer to the attached image in the answer part above).