Question

A pre -image has coordinates N(2,3), U(5,-1) and M(4,1) it is reflected over the x-axis what is the y-coordinate of point U’?

Answer 1

U' (5, 1 )

Explanation:

under a reflection in the x- axis

a point (x, y ) → (x, - y ) , then

U (5, - 1 ) → U' (5, - (- 1) ) → U' (5, 1 )