what is the domain of the relation {(1,4),(2,5),(3,6),(2,2),(1,1)}?

A. {1,2,3}
B. {1,2,3,4,5,6}
C. All whole numbers except 0
D. All real numbers between 1 and 6 inclusive

domain is your choice or availability of x's

what x's do you see ?

right!

To determine the domain of a relation, we need to identify all the unique x-values in the relation. In this case, the relation is given as {(1,4),(2,5),(3,6),(2,2),(1,1)}.

The x-values of the relation are 1, 2, and 3. However, we need to consider only the unique values. Since 2 appears twice in the relation, it is only counted once. Therefore, the domain of the relation is {1, 2, 3}.

So, the correct answer is A. {1, 2, 3}.

I'm pretty sure it's A?