Question

On a coordinate plane, how are the locations of the points (-9, 7) and (-9, -7) related?
A.
reflection across both axes
B.
locations unrelated
C.
reflection across the y-axis
D.
reflection across the x-axis

Answer 1

The points (-9, 7) and (-9, -7) share the same x-coordinate (-9) and have y-coordinates that are opposites of each other (7 and -7).

This indicates that the two points are reflections of each other across the x-axis.

Therefore, the correct answer is:

**D. reflection across the x-axis**