{(10,20}, (10,50), (11,30)} is a function while the relation {(1,7),(1,14),(1,21)} is not a function since there is a repetition in the domain of the functions.
Domain of the relation are the x-coordinate points of the relations while the range are the y-coordinate points of the relation.
A binary relation associates elements of one set, called the domain, with elements of another set, called the codomain.
In coordinate points (x, y), the x-coordinates are the domains while the y-coordinates are the co domain.
Given the relations below;
a.{(10,20}, (10,50), (11,30)}
b. {(1,7),(1,14),(1,21)}
From the given relations, the relation {(10,20}, (10,50), (11,30)} is a function while the relation {(1,7),(1,14),(1,21)} is not a function since there is a repetition in the domain of the functions.
Domain of the relation are the x-coordinate points of the relations while the range are the y-coordinate points of the relation.
Learn more on domain and range here: https://brainly.com/question/26098895
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