This GeoGebra applet can be used to look at graphs of functions, their tables of values, domain and range. We can enter different functions of [math]x[/math] in the green input box [math]f(x)[/math] below the grid, and the minimum and maximum values of [math]x[/math] in the blue input boxes. The blue column contains the independent variable. The first value is x-min. The rest are generated with a step, controlled by the slider at the lower left corner. The values of the function are calculated in the green column. [*]Drag the slider to reduce the step and generate more points on the graph of [math]f(x)[/math]. [*]Experiment with different functions.