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First two people to define domain, range, relation, and function gets a chance to win a Brainliest.

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Domain - Input for the function (x)

Range - Output for the function (y)

Function - a relation where only 1 input will give only 1 output

Relation - an expression of variables

I don't know if i'm right but .. my answer is:

All of the values that can go into a relation or function (input) are called the domain. ... The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range.

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step-by-step explanation: