Question

5 Below are the coordinates of the vertices of AVWX and its image after a reflection.

AVWX: V(2, 1), W(3, 5), X(4,2)
AV'W'X':V'(-2, 1), W'(-3, 5), X'(-4,2)
a. What do you notice when you compare corresponding x-coordinates and
corresponding y-coordinates of the vertices of AVWX and AV'W'X'?
b. What is the line of reflection?

Answer 1

Part a

The x coordinates of the image are the negatives of those of the preimage, but the y coordinates are the same.

Part b

This is a reflection over the y-axis, which has equation x = 0.