Explain the two graphs in relations , inverse and direct image , R inverse

Explain the two graphs in relations , inverse and direct image , R inverse Equivalence called Relations A relation from a set of X to a set r is a subset R of X x Y b) e R. we say a is related to b and Often write it as a R b. If X Y. We say that R is rela- (ion on X. Let R a relation from X to Y. For each subset A Of X, We write Y: xRyforsomexEAi and call it the (direct) image of A under R. and for each subset B of Y. we write R (B) = X : x R y forsomcy e B) and call it the inverse Onageof B under R. Illustration 7 The relation R on symmetric as 3 i reflexive. I@wtration R is reflexive. The number o on a set contauu Functions A relation F called image