16. Five marks exercise problems I

Let $f: A \rightarrow B$ be a function defined by $f(x) = \frac{x}{2} - 1$, where $A = \{2, 4, 6, 10, 12\}$, $B = \{0, 1, 2, 4, 5, 9\}$. Represent $f$ by

 

(i) set of ordered pairs

 

(ii) a table

 

(iii) an arrow diagram

 

(iv) a graph