Final answer:
The domain of the function represented by the set of ordered pairs {(1, 4), (3, 2), (8, 9), (7, 6), (9, 4)} is {1, 3, 8, 7, 9}.
Step-by-step explanation:
The domain of a function is the set of all possible input values (x-values) for which the function is defined.
In the case of a set of ordered pairs, the domain consists of the first elements of each pair.
For the given function defined by the set of ordered pairs {(1, 4), (3, 2), (8, 9), (7, 6), (9, 4)}, the domain is the set of the first numbers in each pair.
Therefore, the domain of the given function is {1, 3, 8, 7, 9}.