Question

Which ordered pair is a reflection of (3, 7) across the x-axis?

(-3, 7)
(3, -7)
(-3, -7)
(7, -3)

Answer 1

Answer: B (3,-7)

Explanation:

When we reflect something across the x-axis, we just multiply the y-coordinate by -1. When trying this out with our y coordinate, we get:

7 * -1 = -7

So we get:

(3,-7)