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