need help on relation and function

G

Guest

Guest
the problem iz that "findthe domain and range of each relation.iz the relation a function. #4
{(6,-6)},(7,-7),(3,-3),(4,-4)}
 
Hint: What are the definitions of "domain" and "range"?

Eliz.
 
Hint : the domain is the first number , the range is the second number in the ordered pair :)
 
First make a list of the domains and functions like this:

[/u]DOMAINFUNCTION
........6-------------------->-6
........7-------------------->-7
........3-------------------->-3
........4-------------------->-4

*now you can find out if the relation is a function.. 8-)
 
A relation is a function if, No two pairs have the same first term.
 
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