Parabola
This applet allows you to experiment with the equation of a parabola.
Use the mouse to move the focus.
Use the slider or the input box to set the right-hand side of the equation of the directrix.
Problems.
1. Find the equation of the parabola whose focus is F = (3,2) and whose directrix is x = -2. Check your calculations in the applet window.
2. Find the equation of the parabola whose focus is F = (3,-2) and whose directrix is y = 1. Check your calculations in the applet window.