Which of the following would be a line of reflection that would map ABCD onto itself?

Square ABCD with B at 1 comma 3, A at 1 comma 1, D at negative 1 comma 1, and C at negative 1 comma 3.

A x = 1
B −x + y = 2
Cx − y = 2
D 2x + y = 3

Which of the following would be a line of reflection that would map ABCD onto itself Square ABCD with B at 1 comma 3 A at 1 comma 1 D at negative 1 comma 1 and class=