SoaHelp
  • SoaHelp
Which of the sets of ordered pairs represents a function? A = {(1, −5), (8, −5), (8, 7), (2, 9)} B = {(7, −4), (7, −2), (6, −3), (−9, 5)} Only A Only B Both A and B Neither A nor B
Mathematics
katieb
  • katieb
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triciaal
  • triciaal
you have a function when there is only one y-value for a given x-value only one output for any one input
SoaHelp
  • SoaHelp
so the answer would be Both A and B
Rhystic
  • Rhystic
so if you look at the coordinate sets, a function is either linear or nonlinear. Non linear functions will never have two points lieing in a straight line it will always be offset even by a decimal point. In those two coordinate sets there is a pair that lie on the same line while the others do not... that is not a function.

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triciaal
  • triciaal
no, it would be neither A nor B A cannot be a function because input 8 has 2 outputs -5 and 7 B cannot be a function because input 7 has 2 outputs -4 and -2
SoaHelp
  • SoaHelp
oh okay thxs for your help
triciaal
  • triciaal
read my definition again in order to be a function you cannot have 2 outputs for the same input
triciaal
  • triciaal
welcome

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