Answer with explanation:
In two dimensional plane, a line y=-x, is drawn. A point ,(2,5) is shown in the coordinate plane.
When the point, Preimage (2,5) is reflected through, line , y= -x
the coordinates of image , that is point after reflection will be (-5, -2).
The rule says that if you will reflect a point , (a,b) through line, y= -x, the coordinates of point after reflection will be , (-b, -a).
⇒(2,5) after reflection = (-5, -2).