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Mathematics 8 Online
OpenStudy (anonymous):

Why can the graph (below I will draw it) not be an inverse function?

jimthompson5910 (jim_thompson5910):

If it violates the horizontal line test, then it cannot be invertible.

OpenStudy (anonymous):

|dw:1316572089735:dw|

OpenStudy (ybarrap):

if the function is not purely (i.e. monitonically) increasing or decreasing, then it has no inverse. This function may go horizontal somewhere before -infinity and thus it deriviative become zero somewhere and thus is not increasing by definition.

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