Give the domain and range of the relation.
-{(41, -3), (5, -2), (5, 0), (9, 2), (21, 4)}
A)domain: {41, 9, 5, 21}; range: {-3, -2, 0, 2, 4}
B)domain: {-3, -2, 2, 4}; range: {41, 9, 5, 21}
C)domain: {-3, -2, 0, 2, 4}; range: {41, 9, 5, 21}
D)domain: {41, 9, 5, 21}; range: {-3, -2, 2, 4}

Question

Quizplus · Accepted Answer

The domain of a relation consists of all the first elements in each ordered pair, and the range consists of all the second elements. For the given relation, the domain is {41, 5, 9, 21} (note that 5 appears twice but is listed once because sets do not include duplicates), and the range is {-3, -2, 0, 2, 4}. Therefore, the correct answer is A, with a minor correction for the domain to include 5 only once and to list all elements in ascending order for consistency: domain: {5, 9, 21, 41}; range: {-3, -2, 0, 2, 4}.

Give the Domain and Range of the Relation