Solve: y=2x+3y = 2x + 3y=2x+3 and y=x+4y = x + 4y=x+4.
(1,5)(1, 5)(1,5)
(5,1)(5, 1)(5,1)
(0,3)(0, 3)(0,3)
(2,7)(2, 7)(2,7)