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