Does this set of ordered pairs represent a function? why or why not? {(–5, –5), (–1, –2), (0, –2), (3, 7), (8, 9)} a. yes, because there are two x-values that are the same. b. no, because two of the y-values are the same. c. no, because one x-value corresponds to two different y-values. d. yes, because every x-value corresponds to exactly one y-value.