The coordinates of a triangle are P(1,4). Q(3,6), and R(5,2). The triangle is reflected over a line and its image coordinates are P'(-1, 4). Q'(-3, 6), and R'(-5, 2). Find the equation of the reflection line.
This will help:
https://www.sd308.org/cms/lib/IL01906463/Centricity/Domain/1474/Honors%209.1-9.3%20Review%20Answers.pdf
