The coordinate P(−2,7) is reflected over the y-axis. State the coordinate of P′.

Answer 1

When a point is reflected over the y-axis, the x-coordinate remains the same, while the y-coordinate changes its sign.

Given the point P(-2,7), when it is reflected over the y-axis, the x-coordinate remains the same (-2), and the y-coordinate changes its sign to become -7.

Therefore, the coordinate of P' is (-2,-7).