Answer-
The coordinates of the image of vertex F after a reflection across the line y = –x will be (3, -1)
Solution-
The co-ordinate of the vertex F is (1, -3).
We know that while reflecting a point with coordinate (x, y) over y=-x line, it becomes (-y, -x).
So applying this rule for vertex F, the new coordinates will be,
[tex]=(-(-3),\ -(1))[/tex]
[tex]=(3,\ -1)[/tex]
Therefore, after reflection the coordinates of F will be (3, -1).
