Question

How do you find the domain and range of {(2,7),(4,9),(2,11),(7,13),(5,9)}?

Answer 1

See a solution process below:

Explanation:

In the set of ordered pairs {(2, 7), (4, 9), (2, 11), (7, 13), (5, 9)}, the domain is the set of the first number in every pair (those are the x-coordinates): {-2, 4, 2, 7, 5}.

The range is the set of the second number of all the pairs (those are the y-coordinates): {7, 9, 11, 13, 9}.