Reflected points are the same distance from but on opposite sides of the line of reflection before and after the reflection takes place.
W'(4, - 2), X'(1,- 2), Y'(1, - 4), Z'(4,- 4)
Practice makes perfect
We are given the graph of the rectangle. Let's identify its vertices.
We want to find coordinates of this figure after a reflection over the y-axis. To do so, we need to plot each vertex of the image W'X'Y'Z' the same distance from the line of reflection as its corresponding vertex on the preimage WXYZ. Because our line of reflection is the y-axis, this will change the sign of the x-coordinates of the points, but the y-coordinates will remain unchanged.
