Question

A parabola has a vertex at (2,5) and opens down, is reflected in the y-axis. What is the image of the vertex after the reflection?

A. (-2,-5)
B. (2,5)
C. (2,-5)
D. (-2,5)

Answer 1

The y-coordinate stays the same; the x-coordinate takes the opposite sign and is -2. Thus, the post-reflection image of (2,5) is (-2,5).