For each of the following functions:

a)y = 2x + 1 b)f: R → R,f(x) = (x-1)^2 c){(x,y):y = x^2 + 1, x ε [0,∞)}

i) Find the rule of the inverse.

ii) State if the relation has an inverse funtion. State your reason

I am really stumped on this one and i dont even know where to start!!

any help would be greatly appreciated!!!