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kotykmax [81]
3 years ago
11

How do I identify the domain and range of a relation or function?

Mathematics
1 answer:
serg [7]3 years ago
7 0

All of the values that can go into a relation or function (input) are called the domain.

All of the values that come out of a relation or function (output) are called the range.

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.

<u><em>EXAMPLE:</em></u>

<em>State the domain and range of the following relation:</em>

<em>(eye color, student's name).</em>

A = <em><u>{(blue,Steve), (green,Elaine), (brown,Kyle), (blue,Marsha), (brown,Miranda), (green, Dylan)}</u></em>   State whether the relation is a function.

Solution: Domain: {blue, green, brown}.    

                Range: {Steve, Elaine, Marsha, Miranda, Dylan}.

No, this relation is not a function. The eye colors are repeated.

<em>sorry for the long answer. I hope i was a help!</em>

<em>like my answer!!!!</em>

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