Find the domain and range.
-{(9,-6), (9,-2), (6,-9), (-11,6), (-10,-8)}
A) domain = {9, 12, -11, -10, 6}; range = {-2, 6, -8, -9, -6}
B) domain = {9, -2, -11, -10, 6}; range = {-2, 6, -8, -9, -6}
C) domain = {9, -11, -10, 6}; range = {-2, 6, -8, -9, -6}
D) domain = {-2, 6, -8, -9, -6}; range = {9, 9, -11, -10, 6}

Question

Quizplus · Accepted Answer

The domain of a set of ordered pairs is the set of all first elements, and the range is the set of all second elements. For the given set, the domain is {9, 6, -11, -10} (noticing that 9 appears twice but is only counted once in a set), and the range is {-6, -2, -9, 6, -8}. Option C correctly lists the unique values in the domain and range without repetition.

Find the Domain and Range