SOLUTION: Which of these coordinate pairs cannot be a part of a function on the domain set (x,y,z,w) (X,2) (y,2) (z,3) (X,1) (z,2) (z,1) (X,1) (y,y) (z,w)

Question 1119309: Which of these coordinate pairs cannot be a part of a function on the domain set (x,y,z,w)
(X,2) (y,2) (z,3)
(X,1) (z,2) (z,1)
(X,1) (y,y) (z,w)
Found 2 solutions by ikleyn, solver91311:
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
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This question is as dark, as at midnight with no moon.

It is NOT THE WAY to formulate a Math problem.

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

You have 9 coordinate pairs listed. From the way you wrote this, I'm guessing that you meant to ask "Which of these groups of coordinate pairs cannot be a part of a function..."

However, since there is a valid answer considering the given set of coordinate pairs as 9 separate entities, I have to respond based only on what you wrote. If it is wrong, then it is on you for not posing your question correctly.

The three coordinate pairs (X,2), (X,1), and (X,1) cannot be part of a function on the domain set {x, y, z, w}. That is because X is not in the domain; x is. And X is NOT the same thing as x; not here and not on any planet in the known universe.

If you really meant what I suspect you meant, please re-post to the site. I may not be around to respond to an e-mail clarification.

John

My calculator said it, I believe it, that settles it

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