Parabolas Focus Directrix

If the focus is 5 units to the RIGHT of the vertex, the directrix is...

• 5 units to the left of the vertex

• 5 units to the right of the vertex

• 5 units below the vertex

• 5 units above the vertex

Find the vertex if the focus is at (9,0) and the directrix is at x=-9

• (-9,0)

• (0,9)

• (0,0)

• (0,-9)

Find the vertex of the parabola if the focus is at (2,4) and the directrix is at y=2

• (2,3)

• (1,4)

• (3,4)

• (2,5)

Find the vertex if the focus is at (-4,-3) and the directrix is at x=2

• (-1,-3)

• (-4,0)

• (-10,-3)

• (0,0)

• p=20

• p=4

• p=5

• p=6

• Above the vertex

• Below the vertex

• To the right of the vertex

• To the left of the vertex

What is p for this parabola?

• p=-8

• p=-4

• p=2

• p=-2

The focus is p units away from the vertex.

• True

• False

What is the correct equation of a left opening parabola if h=3, k=3, and p= -2 ?