SOLUTION: Is this a function? f(x)=2 if x>1 f(x)=-1 otherwise

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Question 68533: Is this a function?
f(x)=2 if x>1
f(x)=-1 otherwise
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
Is this a function?:
f(x) = 2 if x > 1
f(x) = -1 otherwise

Let's graph it and see:



It passes the vertical line test. That is,
no point on the graph is directly above or 
directly below any other point on the graph.
So it is a function.

Edwin