Question

the domain of the following relation: R: {(3, 5), (8, 6), (2, 1), (8, 6)} is

Answer 1

The domain is the set of all first elements of ordered pairs (x-coordinates).

We are given the relation here :

R: {(3, 5), (8, 6), (2, 1), (8, 6)} is

Checking all the first elements here:

(3, 8, 2, 8)

Answer: So the domain of the relation will be {2, 3, 8}