Question 627181
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The question to ask yourself in each case is: If I pick an element from set A, do I get one and only one element of B?  If so, you have a function.  On the other hand, if you pick an A and the associated B is "maybe this, maybe that" then you do NOT have a function.


A. Each Faculty could possibly teach more than one class, so picking a faculty member leaves you with "maybe this class, maybe that class, or maybe this other class..."  Not a function.


B. Each Class has exactly one teacher.  So if you pick a class, you get one teacher, no more, no less.  This is a function.


C. Don't know.  Is it possible for a given Senator to be the chairman of more than one committee?  If so, not a function. If not, then it is a function.  You can research the Senate rules.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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