Question

The arrow diagram shows a relationship between the sets $P$ and Q. Write the relation in
(i) Set builder form
(ii) Roster form
(iii) What is the domain and range of $R$.

Answer 1

(i) Set builder form of $R=\left\{\right(x,y)\mid y=x-2,x\in P,y\in Q\}$
(ii) Roster form $R=\left\{\right(5,3),(6,4),(7,5\left)\right\}$
(iii) Domain of $R=\{5,6,7\}$ and range of $R=\{3,4,5\}$