Question

Which one is right. I am lost and I need help

Answer 1

Reflection across y=x is a special case transformation

$(x,y) \rightarrow (y,x)$

The original triangle has vertices A(-5,1), B(-4,3), C(-2,1), D(-3,-1) so the transformed triangle has vertices

A'(1,-5), B'(3,-4), C'(1,-2), D'(-1,-3)

Choice A'(1,-5)