Question

The coordinates of the vertices of CDE are C(1, 4), D(3, 6), and E(7, 4). If the triangle is reflected over the line y = 3, what are the coordinates of the image of D?

Answer 1

coords are (3,0)
height of triange is 2
when reflected over y=3 base is at y=2 and upsidedown still has the same height so point d=(3,0)