theyyluvvdayday2004 theyyluvvdayday2004 25-12-2019 Mathematics contestada Select the relations that are functions. {(a, 1), (b. 1), (C, 1)] [(a, a), (a, b). (a. c)} {(1,-a), (2. a). (3. a)] f(a, a), (b, b), (C, c)]