Question

determine the domain of the relation.
{(5,5), (6,7), (20,10)}

the domain is {}
(use a comma to separate answers as needed. type each answer only once.)

Explanation:

Step1: Identify domain definition

The domain of a relation is the set of all first values from each ordered pair.

Step2: Extract first values

From pairs (5,5), (6,7), (20,10), take 5, 6, 20.

Step3: Form the domain set

Collect these values into a set, no duplicates.

Answer:

{5, 6, 20}