Answer:
Option 4th is correct
the domain of the following relation R is:

Explanation:
Domain is the set of all values of x-coordinates where function is defined.
Given the Relation:

The ordered pairs are in the form of (x, y)
Domain = Set of all values of x.
In the given relation:
x-values = { 6, 1, -3}
⇒

therefore, the domain of the following relation R is:
