9514 1404 393Answer: A (and C)Step-by-step explanation:A relationship that is a direct proportion is described by the equation ... y = kxfor some constant k.You can examine the tables to see what the value of k is by looking at ... k = y/x__In table A, the values of k are 125/5 = 250/10 = 500/20 = 25.In table B, the values of k are 100/50 = 2, 250/20 = 125, 50/10 = 5. These are not constant, so the relation is not a proportional one.In table C, the values of k are -125/5 = -250/10 = -500/20 = -25.In table D, the values of k are 8/2 = 4, 10/4 = 2.5, 12/6 = 2. These values are not constant, so the relation is not a proportional one.__We see that the tables of A and C both represent proportional relationships. We usually expect the value of k to be positive, but there is nothing in the definition of a proportional relationship that demands that be the case.If this is a single-answer question, choose A.If this is an "all that apply" question, choose A and C.