Solve: x+y=5,y=x+1x + y = 5, y = x + 1x+y=5,y=x+1.
(2,3)(2, 3)(2,3)
(3,2)(3, 2)(3,2)
(1,4)(1, 4)(1,4)
(0,5)(0, 5)(0,5)