Dowload and install GeoGebra from the GeoGebra website.In GeoGebra you can define the position of a point on a graph by an equation but first the variables in the equation must be defined. The variables are changed using a slider so click the slider controlthen place the slider somewhere on the graph where it won"t get in the way by clicking in that place.This variable is going to be time so call it t and choose the...