a 3 Determine whether the following relation on the set of real numbers is a function or not. If it is a function say whether it is one to one and/or onto (x) = -1-4 $ One-to-one function Onto function A function but not one to one and not onto Not a function QUESTION 17 Let the real functions f(x)=2x - and g(x)= x +1 Find the composite functions gof O Non of them O4x2 12x + 10 0 4x - 9 O 2-1 0x + 2x+2