Question

Reflect the point (2, -4) I very rhe y-axis

Answer 1

To reflect a point over the y-axis, you have to reverse the sign of the x-coordinate, the y-coordinate remains the same.

For example for a point P with coordinates (x,y) the reflection is

Original point → y-axis reflection

P(x,y) → P'(-x,y)

For the point (2,-4) the reflection over the y-axis is:

(2,-4) → (-2,-4)