Answer
Conclusion: The graph of $y=-f(x)$ is obtained by
reflecting the graph of $y=f(x)$ about the x-axis.
Work Step by Step
$y=-x^{2}$ has the graph of $y=x^{2},$
reflected about the x-axis.
$y=-|x|$ has the graph of $y=|x|$
reflected about the x-axis.
Conclusion: The graph of $y=-f(x)$ is obtained by
reflecting the graph of $y=f(x)$ about the x-axis.
