Solve using elimination.
A. x = 6, y = -7; x = 6, y = 7 or (6, -7), (6, 7)
B. x = 6, y = 7; x = 7, y = 6; x = -6, y = -7; x = -7, y = -6
or (6, 7), (7, -6), (-6, -7), (-7, -6)
C. x = -6, y = -7; x = -7, y = -6 or (-6, -7), (-7, -6)
D. x = 6, y = 7; x = -6, y = 7; x = 6, y = -7; x = -6, y = -7
or (6, 7), (-6, 7), (6, -7), (-6, -7)
Answer: D
Mathematics
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