Dynagraph 1

Drag point A (the independent variable) and notice the resulting dependent values represented by B on the parallel number line.
Are there any values for which f(x) = x?[br]What is the domain of the function? What is the range of the function?[br]Does the output disappear? If so, when does this happen? Why does it disappear?[br]Check the "show rule" box and compare your description to the function.

Information: Dynagraph 1