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

{2, 3, 8}

Step-by-step explanation:

Domain is the of set all x-coordinates of the ordered pair in the relation.

As per the statement:

Given the relation:

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

Since, the ordered pair is in the form of (x, y)

x-coordinates are 3, 8, 2

y-coordinates are: 5, 6, 1

By definition of domain:

Domains of the following relation R is, {2, 3, 8}

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d