Parabola
Problems 1-4
1. 
vertex = (2,1)
latus rectum = 4c = 4
distance
of foci from vertex = c = 1
parabola opens up
2. 
vertex = (-1,-1)
latus rectum = 4c = -4
distance of foci from vertex = c = -1
parabola opens down
3. 
vertex
= (-1,-1)
latus rectum = 4c = -4
distance
of foci from vertex = c = -1
parabola opens to the left
4. 
vertex = (1,2)
latus
rectum = 4c = 8
distance
of foci from vertex = c = 2
parabola opens to the right
