Quiz about Parabola

Question 1

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

Accepted Answer

true

Answer

false

Question 2

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

Accepted Answer

True

Answer

False

Question 3

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

Accepted Answer

(-3,4)

Answer

(1,4)

Answer

(-1,6)

Answer

(-1,2)

Question 4

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

Accepted Answer

y = -6

Answer

x = 4

Answer

x = 2

Answer

y = -4

Question 5

Which direction does this parabola open?

Accepted Answer

Left

Answer

Up

Answer

Down

Answer

Right

Question 6

The vertex is halfway between the focus and directrix.

Accepted Answer

true

Answer

false

Question 7

Question 7.

Accepted Answer

Standard form

Answer

Intercept form

Answer

Vertex form

Answer

Factored form

Question 8

Select the equation that matches the graph.

Accepted Answer

$$y=-\left(x\ +1\right)^2+4$$

Answer

$$y=\ \left(x-1\right)^2+4$$

Answer

$$y=\ -\ \left(x-1\right)^2-4$$

Answer

$$y=-\ \left(x-1\right)^2+4$$

Question 9

Determine if the following equations will be narrow or wide, upward facing or downward facing.

$$y\ =\ -2\ \left(x\ +\ 3\right)^2-1$$

Accepted Answer

Downward facing, narrow

Answer

Upward facing, narrow

Answer

Upward facing, wide

Answer

Downward facing, wide

Question 10

Select the equation that matches the graph.

Accepted Answer

$$y=\ \left(x-1\right)^2-4$$

Answer

$$y=\ -\ \left(x-1\right)^2-4$$

Answer

$$y=\left(x\ +1\right)^2+4$$

Answer

$$y=\ \left(x-1\right)^2+4$$

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