The coordinates of the image after reflection is
M' ((8, 2)
A' (7, 6)
T' (2, 6)
H' (3, 2)
What is reflection over the y axis
A reflection over the y-axis is a transformation in which each point (x, y) in a figure is mapped to its corresponding point (-x, y) with respect to the y-axis.
Every point is flipped horizontally across the y-axis.
The line of reflection is the y-axis and the coordinates of the image is
M' ((8, 2)
A' (7, 6)
T' (2, 6)
H' (3, 2)