Answer:
(c) B'(3, -2); C'(7, 8); D'(-5, -1)
Step-by-step explanation:
Apparently, you want to know the coordinates of B', C', and D' after reflection of B(-2, 3), C(8, 7), and D(-1,-5) in the line y = x.
Reflection
The reflection in the line y = x has the effect of swapping the x- and y-coordinates:
(x, y) ⇒ (y, x)
No sign changes are involved.
The reflected coordinates are ...
B'(3, -2); C'(7, 8); D'(-5, -1)
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