Answer
See graph and explanations.
Work Step by Step
Using the graph in the exercise, given the line segment of $y=f(x)$, we can obtain the new line segment of $g(x)=f(-x)$ by reflecting it with respect to the y-axis shown as the new red line segment in the figure. Since the original line segment is symmetric with respect to the y-axis, the new line segment is identical to the old one.