Answer:
GGGGGGGGGGIIIIIIIIIIIIIIIIIIRRRRRRRRRRRRRLLLLLLLLLLLLL I BE LIKE IDK!
Step-by-step explanation:
You know somebody deleted my answer but that aint stoppin' me from just saying random things ok peeps, ok cool!!!!!
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(b, a)
Example if D was (3, 2) and reflects across y = x, D' will be (2, 3)