3x + y = 1
(1, 2)
(-2, 1)
(1, -2)
(2, 1)
Answers:
(1, -2) works If you put them in both equations for x and y the statements are correct.
2x – y = 4
2 (1) - (-2) = 4
2 + 2 = 4
3x + y = 1
3 (1) + (-2) = 1
3 - 2 =1
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