Apollonius Revisited Equidistance

-Hide all but the Focus, the directrix and the parabola (Locus). Move the Focus anddirectrix closer to see the effect on the parabola. Do you see how smaller distancebetween the Focus and directrix leads to a steeper parabola?Recall the basic equation of a parabola y = ax 2 where a = 14 p ,p: distance between vertex and directrix=distance between vertex and focus!!FocusSmall p => Large a=> steep paraboladirectrixFocuslarge p => small a=> flatter paraboladirectrix