For each relation, decide whether or not it is a function. Relation 1 Relation 2 Domain Range Domain Range 8 3 rock - 5 -5 -5 7 8 tree O O cloud 3 O Function O Function Not a function O Not a function Relation 3 Relation 4 { (z , j), ( j, j), ( x, z), (h, j)) 1 ( - 9, t ), ( 5, t), (-5, m), (-5, t) } O Function O Function Not a function O Not a function