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Quadratic Equations

Authored by Anthony Clark

Mathematics

9th Grade

CCSS covered

Used 1+ times

Quadratic Equations
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20 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation

s(t) = –16t2 + 64t + 80

What will be the object's maximum height?

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

You jump off a 24 foot high cliff and your fall is modeled by the function:

h(t) = -16t2 + 8t + 24

How long would it take you to hit the water?

8 seconds

1 second

1.5 seconds

1/4 second

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The solutions of the quadratic equation 
x2+2x-15=0 are

x = 3 or x = 5

x = 5 or x = -3

x = -5 or x = 3

x = -3 or x = -5

Tags

CCSS.HSA-REI.B.4B

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The solutions of the quadratic equation 
x2+12x+35=0 are

x = -5 or x = -7

x = 5 or x = 7

x = -35 or x = -1

x = -9 or x = -4

Tags

CCSS.HSA-REI.B.4B

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

Select the solutions to the equation

4x2 + 11x + 7 = 0

x = - 1.75

x = 6

x = - 1

x = 1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

-1 and 3
1 and -3
-1 and -3
1 and 3

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solutions of a quadratic equation are also called

roots

x-intercepts

zeros

All of the above

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