Solve the system of equations using substitution.
A. x = 4, y = -3; x = 3, y = -4
or (4, -3), (3, -4)
B. x = 4, y = 3; x = -3, y = -4
or (4, 3), (-3, -4)
C. x = -4, y = 3; x = -3, y = 4
or (-4, 3), (-3, 4)
D. x = -4, y = -3; x = -3, y = -4
or (-4, -3), (-3, -4)
Answer: B
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