Posted by **~{HAPPY FACE!!}~** on Thursday, February 12, 2009 at 6:42pm.

Which example is a function and which is not? Explain why.

1. Each student takes a selection of art classes.

2. Each student is placed in a math class.

Please Help!!

Thank You so much!!

- Math -
**Damon**, Thursday, February 12, 2009 at 7:03pm
A function can only have one value of the dependent variable for each value of the independent variable.

Therefore if you have several values of art class for a each student, then art class is not a function of student.

- Math -
**~{HAPPY FACE!!}~**, Thursday, February 12, 2009 at 7:03pm
#1 is a function.

#2 is not a function.

Is that right?

Please Help!!

Thanks!!

- Math -
**Damon**, Thursday, February 12, 2009 at 7:07pm
ayuh

- Math -
**~{HAPPY FACE!!}~**, Thursday, February 12, 2009 at 7:13pm
Please could someone else help me? Because I don't know what ayuh means...

Such as Ms. Sue or Writeacher....

Can you explain more on how to get the answer.

Thanks!!

- Math -
**Damon**, Thursday, February 12, 2009 at 7:13pm
ayuh = yes

- Needs Ms Sue or Writeteacher -
**Damon**, Thursday, February 12, 2009 at 7:14pm
Needs more help than I can give.

- Math -
**Ms. Sue**, Thursday, February 12, 2009 at 7:19pm
Sorry -- but I don't have the math skills to help.

- Math -
**Damon**, Thursday, February 12, 2009 at 7:23pm
Look, here is the definition of "function" in your words instead of mine:

"A function is a relation between two sets in which one element of the second set is assigned to each element of the first set."

Now if you have several art classes for each student, then MORE THAN one element of the second set is assigned to each student. - NOT ALLOWED

- Math -
**Damon**, Thursday, February 12, 2009 at 7:27pm
Therefore Number 1 is not allowed

and

Number 2, since it has ONE art subject for each student is allowed.

- Math -
**~{HAPPY FACE!!}~**, Thursday, February 12, 2009 at 8:14pm
Thank you for your explanation.

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