Question

The coordinate plane Q (0,10) is reflected over the y-axis. Identify the x- and y-coordinates of its image, Q':

The coordinates of Q' are (_,_) after a reflection over the y-axis.

Answer 1

The y-coordinate remains the same, so the y-coordinate of Q' is 10.
The x-coordinate changes sign, so the x-coordinate of Q' is -0.