parabola

The focus is always inside the parabola.

• true
• false

All parabolas with a vertical directrix open the left or right.

• true
• false

True or False?

When x is squared, the parabola opens up or down.

• True

• False

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

• (1,4)
• (-1,6)
• (-1,2)
• (-3,4)

(x+3)² = 4(y+5)
What is the equation of the directrix?

• x = 4
• x = 2
• y = -4
• y = -6

The focus is at (2,0) and the vertex is at (-4,0).  What is the equation of the parabola?

• y² = 24(x+4)
• (y+4)² = -12x
• x² = 16(y+4)
• (x+4)²  = -20y

The vertex is halfway between the focus and directrix.

• true
• false

All parabolas with a vertical directrix open the left or right.

• true
• false