Identify the properties satisfied by the following relations by putting a (check) on the corresponding box. R = {(1,1),(1,2),(1,3),(2,1),(2,2),(3,3),(4,4)} R = {(1,2),(1,3),(1,4), (3,2), (3,4),(4,2)} 1. 2. 3. R = {(x,y) | |x-y| = 2} 4. R= {(x,y) | x + y 8} 1. 2. 3. 4 reflexive irreflexive symmetric asymmetric anti- transitive intransitive symmetric Which of the given relations is an equivalence relation?