grraccee grraccee 15-10-2019 Mathematics contestada Which relation is a function of X? table 1: -1,7 2,-9 2,8 3,-4 table 2: -8,-9 -8,2 1,-9 1,2 table 3: -5,1 -5,7 -5,-9 -5,2 table 4: -3,-1 -2,5 4,0 7,-1