Which of the following does not represent a function?
Answer

x 1 3 5 7
y 7 11 15 11

x -4 -3 -2 -1
y -32 -18 -8 -2

x -3 2 6 2
y 0 1 5 4

x -4 -2 0 2
y 3 -1 -5 -9

Question

Which of the following does not represent a function?
Answer
		
x	1	3	5	7
y	7	11	15	11
 		
x	-4	-3	-2	-1
y	-32	-18	-8	-2
 		
x	-3	2	6	2
y	0	1	5	4
 		
x	-4	-2	0	2
y	3	-1	-5	-9

accessdenied · Answer

The requirement of a [well-defined] function is that there is exactly one (not necessarily unique) y-value for each x-value.  If you have more than one y-value for an x, then its not a function.

anonymous · Answer

it is not a function if 1 x value is paired with 2 different y values....