With the two sliders in the bottom you can change the slope of the functions.[br]You can change the distance of the blue and the red function on the x-Axis by moving the big red button.[br]It is also possible to move the car and the bicycle by moving the little blue and red button along the function.

What do the functions discribe?[br]What does the distance of the red and the blue function on the x-Axis stand for? What happens, when both start at (0,0)?[br]What happens, if the two functions intersect? Can it also be possible, that they don't intersect ever?