Focus of a Parabola

A parabola with the vertex at the origin opens down and has a directrix of y = 3, what is the focus?

• (0, - 3)

• (-3, 0)

• (3, 0)

• (0, 3)

If the directrix of a parabola is x = 0 , and the vertex is (-4,0), what is the focus?

• (-4,1)

• (1,-4)

• (-4,-1)

• (-1,-4)

In a parabola, "p" tells you the distance from the ​ (a)   to the ​ (b)   and ​ (c)  

• vertex

• focus

• directrix

• origin

• parabola

• axis

Find the focus and the directrix.

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• 
• 
• 

Find the ordered pair for the focus of the given conic.

• (5, 4)

• (3, 6)

• (1, 4)

• (3, 2)

Find the focus and the directrix.

• 
• 
• 
• 

Find the equation of the parabola with focus at (4, 5) and a directrix of x = 1.

Tags

CCSS.HSG.GPE.A.2

What is the focus directrix form of a parabola with Vertex (-2, 1) and the directrix is 4 units below the vertex?

Find the equation of the parabola with Focus at (7, 0) and directrix x = - 7.

Tags

CCSS.HSG.GPE.A.2

(y-4)² = -8(x+1)
What are the coordinates for the focus?

• (1,4)

• (-1,6)

• (-1,2)

• (-3,4)