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Page history last edited by Laura Wilson 11 years, 7 months ago









     Black = original function  Green = inverse function

Notice how the inverse function is the result of reflecting the original function over y=x. 



      inverse will not be a function                                      inverse will be a function


You can determine if a function is one to one (meaning the inverse of the function is also a function) by doing a horizontal line test.  If a horizontal line intersects the graph of the inverse more than once, the inverse is not a function.      






This website provides applets and questions to reinforce the concept of inverse functions.




This website illustrates how to graph an inverse function by reflecting it over y=x.



See this video for a step-by-step explanation of how to find the inverse of a function:







Comments (1)

Molly Taylor said

at 8:24 pm on Dec 16, 2008

Laura- I can't see the notes, the graph from earlier, and the graph I just posted. Any ideas on how to fix that? Everything else is done.

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