Answer:
True
Step-by-step explanation:
The graph of
is an even function.
This means that the graph of
is symmetric about the y-axis.
If we reflect the graph of
about the y-axis, it will fall exactly on its outline.
This makes it behave as if it has not been reflected at all.
In other words, the mapping for reflection about the y-axis is

Since 
The graph will retrace its outline.