Answer:
Look below.
Explanation:
The following shape is being reflected across the y-axis.
To confirm this, we can check the coordinates.
When something is reflected across the y-axis, its points' y-coordinate don't change. Upon evaluation of the given transformation, we can see that the y-coordinate does not change for any point.
Now, we check the x-coordinate. The x-coordinate MUST be the opposite of the original x-coordinate...
-2 --> 2
-4 --> 4
0 --> 0
-4 --> 4
-2 --> 2
All of the x-coordinates are opposites, and the y-coordinates remained the same, therefore this figure is being reflected across the y-axis.