Question

Please- please help. I know that if you have two of the same values on one side it's not a function, but what if there on different sides? @otherworldly @mathmale @sapphiremoon @chpatterson @nerdychick16

Answer 1

Example, please?

Answer 2

(4,3) (7,4)

Answer 3

Or what is in the attachment.

Answer 4

@brooke..help00 There's no attachment...

Answer 5

6,2
-1,-1
4,3

Answer 6

@welshfella

Answer 7

(4,3) (7,4)? Now I see. If you have a collection of points of the form (x,y), the principle here is that if any particular x value has more than ONE y value associated with it, then that collection of points does NOT represent a function.

(4,3), (7,4), (2,6), .... Here the x values are all distinct, so this set of points represents a function.

(4,3), (7,4), (2,6), (4, 2), ... Here the x-value 4 appears twice; thus we're told that when x=4, y could be either 3 or 2. This is NOT a function.

Please be more specific about your goal when you post a problem. In this case, you might have asked, "How does one judge whether a collection of points (x,y) is or is not a function?"

Answer 8

Thanks, @mathmale, I don't think I would have figured out what she was talking about that quick...