I could've said what happens if x is the negative square root of 2 or what happens if x is -5 halves or positive six seventh. but i'm just picking these numbers because it makes the maths a lot easier when i try to figure out what y is going to be. but when x is 1 y is going to be 2(1) - 1 2 x 1 is 2 - 1 is 1 and i'll do one more. in the colour I have not used yet.