Ineed ! 1. is {(1, 1), (1, 2), (1, 3), (1, 4)} a function? a. yes b. no 2. select the sets that are not functions. (check all that apply) a = {(1, 2), (2, 3), (3, 4), (4, 5)} b = {(1, 2), (2, 1), (3, 0), (4, -1)} c = {(-1, 3), (0, 3), (1, 3), (2, 3)} d = {(1, 1), (1, 2), (1, 3), (1, 4)} e = {(6, 2), (7, 3), (6, -1), (5, 4)} 3. if k = {(x, y)|x - y = 5}, find the corresponding range of y for the domain {0, 2, 4}. a. {-5, -3, -1} b. {0, 2, 4} c. {5, 7, 9} 4. if k = {(x, y) | x - y = 5}, is set k a function? a. yes b. no 5. is b = {(1, 2), (2, 1), (3, 0), (4, -1)} a function? a. yes b. no