Answer: The required domain is {3, 6, -1, 5, -4}.
Step-by-step explanation: We are given to find the domain of the following function :
f = {(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}.
We know that
if a function is written in the form of ordered pairs, then the set of all the first elements is the domain of the function.
In the given function, the set of all the first elements is
{3, 6, -1, 5, -4}.
Therefore, the domain of the given function is
D = {3, 6, -1, 5, -4}.
Thus, the required domain is {3, 6, -1, 5, -4}.