If 4x-2y>3 and 2x-2y<18, which must be true?
let's say 2y < 18 - 2xso 4x - 2y > 34x - 18 - 2x > 32x > 212x/2 > 21/2x > 10.52y < 18 - 2(10.5)2y < 18 - 212y < -3y < 1.5