Conics- Parabolas and Circles

Which equation's graph is RIGHT facing?

• y=4(x-6)²+ 1

• y=-1/2(x+1)²- 3

• x=2y²- 8

• x=-3(y-3)²+5

Which equation's graph is facing DOWN?

• y=4(x-6)²+ 1

• y=-1/2(x+1)²- 3

• x=2y²- 8

• x=-3(y-3)²+5

The directrix is a line on the outside of the parabola.

• True

• False

C is the distance from the directrix to the focus.

• True

• False

What is the vertex of the equation: x=-3(y-3)²+5

• (-3,5)

• (3,5)

• (5,3)

• (5,-3)

Find the directrix of the parabola: x=6y²

• 1/24

• (24, 0)

• x=24

• x=-1/24

Write the equation of the parabola in the picture:

• y=1/4x²

• x=-4y²

• x=1/4y²

• y=4x²

Write the equation of the parabola in the picture:

• y=16x²-2

• y=-1/16x²-2

• y=1/16x²

• y=-1/16x²

What is the center of the circle in the pictures?

• (3,2)

• (2,1)

• (1,2)

• (1,3)

The radius of a circle is the distance from one endpoint to another endpoint through the center.

• True

• False