Quadratic Applications

Quadratic Applications

11th - 12th Grade

12 Qs

quiz-placeholder

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Quadratic Applications

Quadratic Applications

Assessment

Quiz

11th - 12th Grade

Practice Problem

Hard

Created by

Katelyn Fibich

Used 7+ times

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12 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

When I want to find the maximum or minimum height of an object, I should_____.

Set the equation = 0 and solve.
Use x = (-b/2a) as my answer.
Substitute x = 0 into the equation.
Find the y-coordinate for the vertex.

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If I want to find out when an object hits the ground, I should _________.

Use x = (-b/2a) as my answer.
Set my equation = 0 and solve.
Replace x with 0 and evaluate.
Find the y-coordinate of the vertex.

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A fountain shoots water in an arc over a lake that can be modeled by the graph of the equation y= -0.4x2 + 8x where x is the horizontal distance (in feet) from the fountain base and y is the height (in feet) above the river.  How high does the water go?

It goes 11.78 feet high
It goes 20 feet high
It goes 40 feet high
It goes 10 feet high

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The length of a rectangle is 6 meters more than the width.  The area is 72 square meters.  Find the length and width.

Length = 6, Width = 12
Length = 18, Width = 4
Length = 12, Width = 6
Length = 4, Width = 6

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A raft is dropped from a helicopter 256 feet in the air above the ocean.  Its approximate height, h, after t seconds is given by the function h(t) = -16t2 + 256.  How many seconds did it take the raft to hit the water? 

-4
2
4
8

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

An object flies through the air and follows a parabolic path. What does the y-axis represent? 

time 
height from the ground 
horizontal distance 
money 

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

An object flies through the air and follows a parabolic path. Which of these typically represents the x-axis? 

time 
height from the ground 

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