Question

What are the coordinates of a point P(x, y)

reflected across the y-axis? Across the x-axis?
Use reflection notation to write your answer.

Answer 1

`R_(x-axis)` means
`P(x,y) \longrightarrow P'(x,-y)`.

`R_(y-axis)` means
`P(x,y) \longrightarrow P'(x,-y)`