__Introduction to functions__If you need to read up more on basic introduction to function, here's a good reference site:

http://www.mathsisfun.com/sets/function.html

__Task__Now that you have a good basic understanding of function, start geogebra and create two separate graphs of a function and a non-function. Post the screen captures of the two graphs, together with the following details as caption:

- command you entered in geogebra
- whether your graph is a function or a non-function

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