Respuesta :
The domain is the set of all first elements of ordered pairs (x-coordinates).
Answer with explanation:
The relation is a set of ordered pair of the type:
(x,y)
- where the first element of the ordered pair i.e. the value of x represent the domain of the relation.
- and the second element of the ordered pair i.e. the value of y represent the range of the relation.
( For a function we define domain as a set of all the x-values for which a function is defined)