Identifying functions from relations V For each relation, decide whether or not it is a function. Relation 1 Relation 2 Domain Range Domain Range u u d d b f e Function -"' Not a function Function *\" Not a function Relation 3 Relation 4 {( 1, 4),( 1,0),( 1, 1),( 1,1)} {(k,5),(d,-9),(f,-1),(w,7)} Function "" Function ='\"' Not a function Not a function