Use the image to answer the question.

Question

A vertical line separates 2 triangles. The triangle to the left of the line is made up of points upper A, upper B, and upper C, while the triangle on the right is made up of points upper A prime, upper B prime, and upper C prime.

Triangle ABC
has been reflected over a vertical line of reflection. The coordinates of vertices A
, B
, C
, and B′
are shown. What are the coordinates of vertex A′
?

(1 point)
The coordinates of vertex A′
are (
,
).

Answer 1

Since triangle ABC has been reflected over a vertical line, we can see that the x-coordinates of A and A' are the same. Therefore, the coordinates of vertex A' are (A's x-coordinate, A's y-coordinate), which can be written as (A's x-coordinate, A's y-coordinate) or (A's x-coordinate, C's y-coordinate).