Question

If you reflect point K(4, −3) over the x-axis, which coordinate's value changes its sign?
A. Both coordinates' values will change signs.
B. Neither coordinate's value will change signs.
C. The y-coordinate's value will change signs.
D. The x-coordinate's value will change signs.

Answer 1

C. The y-coordinate's value will change signs.

Reflection across the x-axis maps (x, y) to (x, −y). So K(4, −3) becomes (4, 3); only the y-coordinate changes sign.