The coordinates of the vertices of triangle ABC are given in the table. A B C (4,2)(4,2) (6,7)(6,7) (13,1)(13,1) Triangle ABC is reflected across y=−xy=−x . What are the vertices of triangle A'B'C'? Enter your answers in the boxes. A': ( , ​ ​) B': ( , ​ ​) C': ( , ​ ​)