Question

Using a Mapping
The point A(4, –1) is reflected over the x-axis.

Use a mapping to find the coordinates of A’.


A’(4, –1)
A’(–4, –1)
A’(4, 1)
A’(–4, 1)

Answer 1

Reflection across the x-axis maps (x, y) → (x, −y).
So A(4, −1) → A'(4, 1).