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Is x=4 a function?

Guest Apr 9, 2015

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 #2
avatar+91479 
+5

CPhill is of course correct but

 

y=4   IS  a  function.    

Melody  Apr 10, 2015
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 #1
avatar+81063 
+5

No.....it fails to pass the "vertical line test".......that is, when any vertical line is drawn on a graph, it can "cut" the function at only one point, and no more. But, x = 4 is a vertical line, so a vertical line laid on top of it would cut it at infinite points.....!!!!

 

 

  

CPhill  Apr 9, 2015
 #2
avatar+91479 
+5
Best Answer

CPhill is of course correct but

 

y=4   IS  a  function.    

Melody  Apr 10, 2015

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