Example OAF.RF.0:  Suppose $y$ is a function of $x$ given by the equation $f(x) = \frac {x+1} {x-2}$.
The GeoGebra applet gives a spreadsheet, a graph and a mapping diagram for this function.
You can explore other similar related rational functions- by changing the slider values of $k$ and $h$.
The spreadsheet shows a selection of the values this function.
The graph frame shows the graph of the table values of the function $f$ as well as the visualization of the graph of (all the values of) the function.
The mapping diagram frame shows a mapping diagram with a moveable point paired with a point on the graph of $f$.

Martin Flashman, Oct. 27, 2013. Created with GeoGebra