Question

On a coordinate plane, how are the locations of the points (-4, -9) and (4, -9) related?

Answer 1

(x, y)

(-4, -9) → x = -4 and y = -9

(4, -9) → x = 4 and y = -9

The reflection of the point (-4, -9) across the y-axis is the point (4, -9).