Let $A = \{ 3,4,5,6,7 \}$ And Define a Relation $R$ On $A$

Essay

Let $A = \{ 3,4,5,6,7 \}$ and define a relation $R$ on $A$ as follows: for all $x , y \in A$ ,
$$x R y \Leftrightarrow 2 \mid ( x - y ) .$$
(a) Is 6 R 3? Is 4 R 6?
(b) Draw the directed graph of R.