Question

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

No domain exists

{1, 5, 6}

{3, 8, 2, 8}

{2, 3, 8}

Answer 1

the domain is the set of the first components of your ordered pairs

Answer 2

@lolhanna domain is the set of the first element of the ordered pairs
example
(2, 3); (3, 4); (5, 7)
domain={2, 3, 5}

Answer 3

so its the last one ?

Answer 4

{2, 3, 8}

Answer 5

yes