ANSWER ASAP PLEAASEEEE
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.

x = 1
−x + y = 2
x − y = 2
2x + y = 3