Explanation:
1. When a point is reflected under x axis then the x coordinate is constant while the y coordinate gets changed to negative if positive and positive if negative.
So, here the new coordinates of the point (x,y) under x axis will be --> (x,-y)
2. When a point is reflected under y axis then the y coordinate is constant while the x coordinate gets changed to negative if positive and positive if negative.
So, here the new coordinates of the point (x,y) under y axis will be --> (-x,y)
3.
Original point: (x,y)
Reflection across the x axis: (x,-y)
Reflection across the y axis: (-x,y)