Answer:
-2, 7 = -2, -7
3, 9 = 3, -9
7, 2 = 7, -2
-3, -9 = -3, 9
(-2, 7) = (-2, -7)
(3, 9) = (3, -9)
(7, 2) = (7, -2)
(-3, -9) = (-3, 9)
Hope this helps!
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