For the following relation, give the domain and range and indicate whether it is a function. {(4, 1), (5, 6), (2, 4)}
A) Domain = {4, 5, 2}; Range = {1, 6, 4}; a function
B) Domain = {1, 6, 4}; Range = {4, 5, 2}; not a function
C) Domain = {4, 5, 2}; Range = {1, 6, 4}; not a function
D) Domain = {6, 5, 2}; Range = {5, 6, 4}; a function
E) Domain = {5, 6, 4}; Range = {6, 5, 2}; not a function

Question

Quizplus · Accepted Answer

The domain is the set of all x-values, which are 4, 5, and 2. The range is the set of all y-values, which are 1, 6, and 4. To check if it is a function, we can see if there are any repeating x-values with different y-values. In this case, there are no repeating x-values, so it is a function.

For the Following Relation, Give the Domain and Range and Indicate