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