3x + 4y = 12 The first thing we should do in this case is clear and. We have then: 4y = -3x + 12 y = (- 3x + 12) / (4) Rewriting: y = (- 3/4) x + 3 We evaluate now for x = 4 y = (- 3/4) (4) + 3 y = -3 + 3 y = 0 The ordered pair is: (x, y) = (4, 0) Answer: y = (- 3/4) x + 3 (x, y) = (4, 0)
