are the ordered pairs(-2,-1),(-1,0)(6,3) and (-2,-1) a function?

Question

anonymous · Answer

what is the domain
and range

mertsj · Answer

A function is a set of ordered pairs in which no two ordered pairs have the same first number.  So is it a function?

anonymous · Answer

no

mertsj · Answer

Good job.  The domain is the set of x values and the range is the set of y values.

anonymous · Answer

help me understand that im a little confused on that part

mertsj · Answer

Do you know which is the x value of an ordered pair and which is the y value?

anonymous · Answer

yea the first number in the pair is x second is y

mertsj · Answer

So what are the x values of your ordered pairs?

anonymous · Answer

-2,-1,6,-2

mertsj · Answer

So put them in order (don't list any number twice), put braces around them and that's your domain.....the set of x values.  Do the same with the y values and that will be the range.

anonymous · Answer

so i dont put -2 twice??

mertsj · Answer

Did you see where I typed not to list any number twice?

anonymous · Answer

lol yea just wanted to be sure this is very important to my grade right now

mertsj · Answer

{-2,-1,6}   That's the domain.

anonymous · Answer

thanks a bunch you rock

mertsj · Answer

yw.  Don't forget to do the range.

anonymous · Answer

will do