Solve the system by substitution.
-x + y = 3 x - y = 1
A) (2, 1)
B) No solution
C) (1, 2)
D) (-2, 2)

Name: Solve the system by substitution. -x + y = 3 x - y = 1 A) (2, 1) B) No solution C) (1, 2) D) (-2, 2)
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Question

Quizplus · Accepted Answer

Solving the first equation for y gives y = 3 - x. Substituting this into the second equation gives x - (3 - x) = 1, which simplifies to 2x = 4, so x = 2. Substituting x = 2 into y = 3 - x gives y = 1. Therefore, the solution is (2, 1).

Solve the System by Substitution