The domain of the following relation: r: {(−4, 8), (8, 10), (5, 4), (1, 6), (5, −9)} is

Solution:

For an ordered pair (x,y) that a set contain:

X = domain

y = range

In a relation x can have 2 or more than 2 ranges.

So, domain = first element of ordered pair

Given, ordered pair is r: {(-4, 8), (8, 10), (5, 4), (1, 6), (5, -9)}

Domain = -4, 8, 5, 1, 5.

Since the element 5 is occuring twice, domain = {-4, 8, 1, 5}

Therefore, the domain is {-4, 8, 1, 5}

The domain of the following relation: r: {(-4, 8), (8, 10), (5, 4), (1, 6), (5, -9)} is

Summary:

The domain of the relation: r: {(-4, 8), (8, 10), (5, 4), (1, 6), (5, -9)} is {-4, 8, 1, 5}.