Solve: 2x+2y=82x + 2y = 82x+2y=8 and x−y=0x - y = 0x−y=0.
(2,2)(2, 2)(2,2)
(4,4)(4, 4)(4,4)
(0,0)(0, 0)(0,0)
(1,3)(1, 3)(1,3)