Conic Sections
1. Slide point E to -1 or 1. Move the graph around until you find a conic section.
What conic section appears when point E is at -1 or 1?
2. Leaving point E at -1, slide point D near 1. Move the graph around until you find a conic section.
What conic section appears when you slide point D near 1? What conic section appears as you slide point D near 0?