Question

The reflection point of A (2, 5) in the y-axis is (k, m). Find the value of (k + m).

Answer 1

If the reflection is on the y axis, y - coordinate remains the same and the sign of x coordinate changes.

The reflection point of A(2, 5) in the y axis is (-2, 5).
Therefore, k = -2 and m = 5.
k + m = 3