Determine the domain and range of the relation {(-4,7), (12,1),(-2,-6),(9,-1),(5,-3)}

Question

Determine the domain and range of the relation for each

Answer 1

So what is a domain:

 

--The domain is the set of all x values.  If we recall from all the way back in the day, ordered pairs are written as (x,y).  Looking at all the first numbers, the domain is:

-4,12,-2,9,5

 

How about the range:

 

--A range is defined as the set of y values that satisfy the relationship.  This is represented by the second numbers in the ordered pair:

 

7,1,-6,-1,-3

 

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Answer 2

The domain is the set of all the first numbers in the pair.

The range is the set of all the second number in the pair.