Question 687651: - So why is (0,-5), (5,-5), (4,-5), (3,-5) this a function?
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! It's a function as long as you don't have
2 different values of  for the same 
The format is (x,y)
and the  for each point is
( 0,y[1] ), ( 5,y[2] ), ( 4,y[3] ), ( 3,y[4] )
None of the x-values are repeated, so with
just those points given, it is a function.
If the next point was (4,y[5]), then both
 and  would have the same
x-value which is  , so then it would no longer
be a function.
Hope this helps
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