Multiple Choice
Choose the one alternative that best completes the statement or answers the question.
Solve by the substitution method.
-x + y = 3
9x + 9y = 27
A) {(0, 0) }
B) {( 7, -4) }
C) {(x, y) | x + y = 3}
D)
Correct Answer:

Verified
Correct Answer:
Verified
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