Solve the system of equations using substitution.
A. x = -12, y = 5; x = -5, y = 12
or (-12, 5), (-5, 12)
B. x = 12, y = -5; x = 5, y = -12
or (12, -5), (5, -12)
C. x = 12, y = 5; x = 5, y = 12
or (12, 5), (5, 12)
D. x = -12, y = -5; x = -5, y = -12
or (-12, -5), (-5, -12)
Answer: C
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