Solve: 2x−y=42x - y = 42x−y=4 and x+2y=7x + 2y = 7x+2y=7.
(3,2)(3, 2)(3,2)
(2,0)(2, 0)(2,0)
(1,3)(1, 3)(1,3)
(4,4)(4, 4)(4,4)