Quadratic Test II Review

Question 1

What is the y-intercept of f(x)= x2+4x-5?

Accepted Answer

(0,-5)

Question 2

What is the interval of decrease of the following graph?

Accepted Answer

1 to infinity

Question 3

What are the x-intercepts of the function y= -x2+6x

Accepted Answer

(0,0) and (6,0)

Question 4

What is the equation of the following graph?

Accepted Answer

y=x2+2

Question 5

The discriminant of f(x)= -2x2-4x+9 is...

Accepted Answer

88

Question 6

What are the zeros of the function h = -5t2 + 20

Accepted Answer

t= 2, t= -2

Question 7

If you are asked to find when a diver will hit the water what are you being asked to find?

Accepted Answer

x-intercept

Question 8

How does the function f(x)= -1/2x2 relate to the parent function?

Accepted Answer

Wider by a factor of 2 and flipped over the x-axis

Question 9

What is f(x)= x2+4x-5 in intercept form?

Accepted Answer

f(x) = (x+5)(x-1)

Question 10

What transformation is needed to obtain g(x)= -(x+2)2-1 from f(x)= (x+2)2+4

Accepted Answer

Reflect over x-axis and shift down 5

Question 11

What is the correct equation for this graph in intercept form?

Accepted Answer

y = -(x-3)(x-1)

Question 12

Which function has a higher initial height than the graph shown?

Accepted Answer

y= -x2+20

Question 13

Which is a zero of the function y= x2-3x-10

Accepted Answer

(5, 0)

Question 14

Find Vertex Form of the following equation: f(x) = -3(x-3)(x+5)

Accepted Answer

f(x) = -3(x+1)2+48

Question 15

If y= -x2+ 10x + 6 models a divers height in feet, what was the divers initial height?

Accepted Answer

6 feet

Question 16

The following graph models a diver jumping into the water. What is the divers maximum height?

Accepted Answer

7 feet

Question 17

What is the axis of symmetry?

Accepted Answer

x=4

Question 18

What is the sign of the discriminant?

Accepted Answer

Negative

Question 19

If this graph models a rocket being launched, what is the practical range?

Accepted Answer

0 to 16

Question 20

This models a rocket being launched, what is the interval of decrease on the practical domain?

Accepted Answer

4 to 8

Question 21

How is the function g(x)= -(x-2)2+4 different from f(x)= (x-2)2+1

Accepted Answer

Flipped over the x-axis and shifted up 3

Question 22

Find Standard Form of the following equation: f(x) = -3(x-3)(x+5)

Accepted Answer

f(x) = -3x2-6x+45

Question 23

What is the correct equation for this graph in vertex form?

Accepted Answer

y = -(x-2)2+1

Question 24

If this graph models a rocket being launched, what is the practical domain?

Accepted Answer

0 to 8

Question 25

Does the function y= -2x2- 8x + 3 open up or down?

Accepted Answer

Down

Question 26

Find the Axis of Symmetry for the function y= -2x2- 8x + 3

Accepted Answer

x= -2

Question 27

What is the range of the following graph?

Accepted Answer

negative infinity to 2

Question 28

What is the range of the following graph?

Accepted Answer

2 to infinity

Question 29

If you are asked to find when a ball will reach its maximum height what should you find?

Accepted Answer

The y value of the vertex

Question 30

This models a rocket being launched, what is the interval of increase on the practical domain?

Accepted Answer

0 to 4

Question 31

What is f(x) = x2 + 4x - 5 in vertex form?

Accepted Answer

f(x) = (x+2)2-9

Question 32

The graph represents a ball being tossed. How long does it take to reach its max height?

Accepted Answer

1 sec

Question 33

What is the vertex of the function y= (x+5)2-2

Accepted Answer

(-5, -2)

Question 34

What is the axis of symmetry?

Accepted Answer

x=1

Question 35

The vertex of f(x)= -2x2-4x+9 is a...

Accepted Answer

maximum

Question 36

Describe the transformation needed to obtain f(x)=3x2-1 from the parent function.

Accepted Answer

narrow by a factor of 3 and shift down 1

Question 37

After how many seconds does the ball hit the ground?

Accepted Answer

2 sec

Question 38

Use the quadratic formula to find the roots of f(x) = x2 + 4x - 5.

Accepted Answer

x=1 or -5

Question 39

Find Vertex Form of the function y= -2x2- 8x + 3

Accepted Answer

y= -2(x+2)2+11

Question 40

What is the equation of the following graph in intercept form?

Accepted Answer

y = -1/2(x+1)(x-3)

Question 41

Write the equation of this graph in vertex form.

Accepted Answer

y = -2(x-1)2+7

Question 42

What is the interval of increase for the following graph?

Accepted Answer

5 to infinity

Quadratic Test II Review

Questions 42

Quadratic Test II Review

Questions 42