Question

What is the image of (2, 1) after a reflection over the x-axis?

Answer 1

(2, -1)

Explanation:

Whenever you reflect a point over the x-axis, the x-coordinate remains the same, but the y-coordinate becomes its additive inverse.

(x, y) ⇒ (x, -y).

(2, 1) ⇒ (2, -1).