1. Find an equation of the parabola that has a focus at (3,11)and a vertex at (3,9):
y=
Find an equation of its directrix:
y=
2. Find the equation for the parabola that has its focus at the (-41/4,-6)and has directrix at x=25/4 equation is?
3. Find the equation for the parabola that has its vertex at the origin and the focal point is 454 units to the left of the directrix. The equation is ______?
4. Write the equation of a parabola whose directrix is y=4 and has a focus at (7,14)?