Question

Write the coordinates of the vertices after a reflection across the line y = 2.

P(-1, -4)=?
Q(4, -4)=?
R(8, -1)=?
S(3, -1)=?

Answer 1

P' = (-1, 8) (the x coordinate stays the same and the y coordinate = (distance between -4 and 2) + 2 = 6+2 = 8).

using the same process:-

Q' = (4, 8)

R' = (8, 5)

S' = (3, 5)