Can you please help me with question 8 and 9 please:

212 100% + 8. Each of the following diagrams illustrates a relation on some set. In each case, list all elements of the relation, determine its domain and range, and decide whether the relation is reflexive, symmetric or transitive. (If a relation fails to be reflexive, symmetric or transitive, explain why). (b) (a) b d b (d) (c) a 9. Define a relation, R, on Z as follows: mRn if and only if 3| (2m + n) (So, for example, (2,8) E R since (2)(2) + 8 = 12 and 3/12. On the other hand, (7,5) # R since (2) (7) + 5 - 19 and 3 + 19). Prove that R is an equivalence relation on Z. LEGION F12 Insert PrtSc F11 F5 F6 F7 F8 F9 F10 YS' o.+