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Parabola A Value

Authored by Anthony Clark

Mathematics

9th Grade

CCSS covered

Parabola A Value
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11 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

y = -2

x = 3

x = -3

y = 2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Does the equation open up or down? 
Y = -3x2 +7x - 2

up

down

Neither; it opens to the right.

Neither; it opens to the left.

Tags

CCSS.HSF-IF.C.7A

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How can you tell whether a parabola opens up or opens down by looking at the equation?

The vertex tells you the direction of the opening

The value of "a" tells you the direction of the opening.

All parabolas open upward

All parabolas open downward

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the axis of symmetry?
f(x) = x- 8x + 15.

x = -4

x = 4

y = 4

y = -4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How do we define a parabola using its focus and directrix?

A parabola is the set of all points that are the same distance from a single point, called the focus of the parabola, and a line, called the directrix of a parabola.

A parabola is the set of all points that have a greater y value than a single point, called the focus of the parabola, and a lesser x value than a single point, called the directrix of the parabola.

A parabola is a circle with a center point called the focus of the parabola, and a line from the center of the circle to the circle called the directrix of the parabola.

A parabola is a square in which the center of the square is called the focus of the parabola, and the length of one side of the square is called the directrix of the parabola.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the standard equation of a parabola that opens right and whose vertex is at the origin?

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Each point on the curve of a parabola is ____________ to focus and the directrix.

equilateral

perpendicular

equidistant

tangent

Tags

CCSS.HSG.GPE.A.2

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