Answer
As per the graphs,
The blue curve is $y=sin x$,
The red curve is $y=-sin x$.
Hence, by adding the negative sign, the original graph is reflected about x-axis.
Work Step by Step
As per the graphs,
The blue curve is $y=sin x$,
The red curve is $y=-sin x$.
Hence, by adding the negative sign, the original graph is reflected about x-axis.
