Determine the location of the focus and directrix of this conic section. Sketch the graph of this conic section which shows the focus, directrix and vertices. Assume that the earth is a sphere with ...

In this 3-part activity, students use paper-folding and an interactive computer sketch to develop the equation of a parabola given the focus and directrix.

4. Consider the polar equation \ (r (3-k\cos \theta )=4\text {.}\) For what values of the constant \ (k\) is this conic section an ellipse? Now assume that \ (k\) has the value in the middle of the ...