Alg2 Un6Wk1-Conic Sections (Parabolas)

What is the vertex of the parabola: y=2(x-3)²+4

The focus is always inside the parabola.

• true
• false

A parabola is the set of all points equidistant from the focus and the directrix.

• true
• false

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

• true

• false

What direction does the parabola point?

• Up 
• Down
• Left 
• Right

(y-4)² = -8(x+1)
What direction does this parabola open?

• up
• down
• left
• right

(y-4)² = -8(x+1)

What are the coordinates for the focus?

(x+3)² = 4(y+5)

What is the equation of the directrix?

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

Mathematical Equivalence

ON

Which correctly describes the parabola:  $y=-\frac{1}{2}\left(x+3\right)^2+4$  

• Opens left

• Opens right

• Opens up 

• Opens down