There's a scrollbar to make the molecules fast or slow. You can plot points as before, but if you change the speed between points, they won't fall on the hyperbola anymore. A nice official thing to do is plot several points at one speed, note the hyperbola, then erase the points by clicking on them, change the speed, and plot some more points. You'll see what mathematicians call a family of hyperbolae, each one being an instance of Boyle's Law. If you think about what's mechanically happening to the lid, you can segue into some of the other Gas Laws.
Faster molecules deliver a bigger recoil kick to the lid when they bounce off.
Newton says that this is momentum which is proportional to speed, so twice the speed, twice the kick in each impact. Three times the speed, three times three or nine times the pressure. Mathwise, pressure is proportional to speed squared if volume is constant. As before, even if molecules are moving in all directions at different speeds, this still works for the average, but now we're talking average square speed . Well, some people might get excited.