i need solution step by step

Question 9 (10 points) Given the relation R = {(n, m)|n, me z, In] = [m]}. Which of the following statements about Ris correct? R is an equivalence relation Ris not an equivalence relation because it is not reflexive Ris not an equivalence relation because it is not transitive R is not an equivalence relation because it is not symmetric Question 10 (10 points) Assume A is the set of positive integers less than 3 and B is the set of positive integers less than 4 and R is a relation from A to B and R = {(a, b) | a e A, B e B, a + b} Which of the ordered pairs does not belong to this relation? (1, 2) O (2, 1) O (2,3) O (3, 2)