Section 1.3: Functions

In each of the following cases, state whether the function is one-one, onto or bijective. Justify your answer.
(i) \(f : \mathbb{R} \to \mathbb{R}\) defined by \(f(x) = 3 - 4x\)
(ii) \(f : \mathbb{R} \to \mathbb{R}\) defined by \(f(x) = 1 + x^2\)