Solve: y=2x+1y = 2x + 1y=2x+1 and y=x+3y = x + 3y=x+3.
(2,5)(2, 5)(2,5)
(1,3)(1, 3)(1,3)
(0,1)(0, 1)(0,1)
(3,7)(3, 7)(3,7)