# Thread: Domains and Ranges

1. ## Domains and Ranges

Could anyone help me find the domains and ranges of this problem? I haven't got the foggiest idea.

2. There are six ordered pairs in S.
The domain of S is the set of first terms.
The range of S is the set of second terms.

3. Originally Posted by Plato
There are six ordered pairs in S.
The domain of S is the set of first terms.
The range of S is the set of second terms.
Could you elaborate?

4. In the ordered pair (-1,3) the first term is -1 and the second term is 3.

5. Originally Posted by Plato
In the ordered pair (-1,3) the first term is -1 and the second term is 3.
So for Domain, I've got: -5, -4, -3, 1, 4, 6
And Range I've got: 5, 1, -7, -4, -3, 2

Now what? I'm clueless.

6. Do you even know what set notation is? You've got the answer right in front of you!

-Dan

7. Originally Posted by topsquark
Do you even know what set notation is? You've got the answer right in front of you!

-Dan
I'll be flat out honest. I haven't had a math class in quite some time. And even then I did poorly in Algebra.
I'm helping out a friend with their math and this question left both of us stumped.
So, no, I'm not quite sure what a Set Notation is.

And so I was wondering if someone could guide me through it, step-by-step so I can keep it in my notes so I can do it myself next time.

8. Originally Posted by tony_rose88
So for Domain, I've got: -5, -4, -3, 1, 4, 6
And Range I've got: 5, 1, -7, -4, -3, 2

Now what? I'm clueless.
Your answer for the domain is the set of integers {-5, -4, -3, 1, 4, 6}.

Your answer for the range is the set of integers {5, 1, -7, -4, -3, 2}.

(Note that the order of the elements of the sets are unimportant.)

-Dan

9. Originally Posted by topsquark
Your answer for the domain is the set of integers {-5, -4, -3, 1, 4, 6}.

Your answer for the range is the set of integers {5, 1, -7, -4, -3, 2}.

(Note that the order of the elements of the sets are unimportant.)

-Dan
Haha, oh. Duh. *smacks head*

So the order of the sets are unimportant, huh?
Does that mean for the domain set of integers, I can start with one coordinate and start with a completely different coordinate for the range and have everything mixed up?
For example:
Domain: {-7, 2, -5, -3, 1 -4}
Range: {4, 6, -4, -5, -3}

10. Originally Posted by tony_rose88
Haha, oh. Duh. *smacks head*

So the order of the sets are unimportant, huh?
Does that mean for the domain set of integers, I can start with one coordinate and start with a completely different coordinate for the range and have everything mixed up?
For example:
Domain: {-7, 2, -5, -3, 1 -4}
Range: {4, 6, -4, -5, -3}
Since all the answer cares about is the sets, then yes, you can have it all mixed up.

The set {1, 2, 3, 4} is equal to the set {4, 1, 3, 2} because both sets contain exactly the same elements.

-Dan

11. Awesome. Thanks so much. I get it now.

Sorry about the spam post earlier.