Quiz about 6.1 Understanding Quadratic Functions

Question 1

What is the vertex of this quadratic equation?

y = 2(x + 2)² + 5

Accepted Answer

(-2,5)

Answer

(2,5)

Answer

(5,-2)

Answer

(-5,-2)

Question 2

What do we call the graph of a quadratic function?

Accepted Answer

parabola

Answer

linear

Answer

cubic

Answer

sinusoidal

Question 3

What is the maximum/minimum of a parabola called?

Accepted Answer

vertex

Answer

point

Answer

top

Answer

bottom

Question 4

Does the quadratic have a max/min vertex, and does the parabola open up/down?

Accepted Answer

max/ opens down

Answer

min/ opens up

Answer

max/ opens up

Answer

min/ opens down

Question 5

What is the green dashed line called?

Accepted Answer

axis of symmetry

Answer

roots or x-intercepts

Answer

parabola

Answer

line of dashes

Question 6

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

Accepted Answer

x = -3

Answer

y = -2

Answer

x = 3

Answer

y = 2

Question 7

Which equation would give the graph of a parabola?

Accepted Answer

y = x2 + 4

Answer

y = 2x - 3

Answer

y = x₂+ 1

Question 8

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

Accepted Answer

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

Answer

The vertex tells you the direction of the opening

Answer

All parabolas open upward

Answer

All parabolas open downward

Question 9

Compare the function y = 0.3x² to the parent function y = x²

Accepted Answer

Wider

Answer

Narrower

Question 10

Compare the function y = 5x² to the parent function y = x²

Accepted Answer

Narrower

Answer

Wider

Question 11

Match the equation to its description.

Accepted Answer

Reflected over x and stretched by 3

Answer

Stretched by 3

Answer

Reflected over x

Answer

Reflected over x and up 3

Question 12

If red represents y = x², which equation represents black?

Accepted Answer

y = -7x2

Answer

y = 7x2

Answer

y = -(1/7)x²

Answer

y = -5x2

Question 13

Select the false statement about the parabola

Accepted Answer

The minimum is -3

Answer

The vertex is at (-2,-3)

Answer

The maximum is -3

Answer

The y-intercept is -7

Question 14

A parabola is upside-down when a is:

Accepted Answer

negative

Answer

positive

Answer

0

Answer

infinite

Question 15

Question 15.

Accepted Answer

F

Answer

G

Answer

H

Answer

J

Question 16

Use the given function or the graph to find the average rate of change

Accepted Answer

-5

Answer

5

Answer

-1/5

Answer

15

Question 17

Which of the following graphs has the largest average rate of change from -1 to 2?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 18

Find the average rate of change of Pete's height from 3 years old to 5 years old.

Accepted Answer

4 inches per year

Answer

2 inches per year

Answer

8 inches per year

Answer

2 years

6.1 Understanding Quadratic Functions

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