
ACTIVITY 5 Modeling phenomena with linear and quadratic function
Authored by Laura QUIROZ
Mathematics
4th Grade
Used 4+ times

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8 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Scientists are measuring a distant planet's temperature. The graph shows the temperature (in °C) versus the height (in kilometers) above the planet's surface.
What is the temperature at 0 kilometers?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Scientists are measuring a distant planet's temperature. The graph shows the temperature (in °C) versus the height (in kilometers) above the planet's surface.
Choose the statement that best describes how the height and temperature are related.
As the height increases, the temperature decreases
As the height increases, the temperature increases
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Scientists are measuring a distant planet's temperature. The graph shows the temperature (in °C) versus the height (in kilometers) above the planet's surface.
At what rate is the temperature decreasing?
3°C
12 °C
24°C
28°C
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A construction crew is lengthening a road. Let y represent the total length of the road (in kilometers). Let
x represent the number of days the crew has worked. Suppose that x and y are related by the equation
3x+54=y
Note that a change can be an increase or a decrease.For an increase, use a positive number. For a decrease, use a negative number.
What is the change in the road's length per day?
3 kilometers
-3 kilometers
54 kilometers
-54 kilometers
5.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
The cost C (in pesos) of manufacturing x wheels at Jorge's Bicycle Supply is given by the function C(x)=0.9x2-288x+35 386
. How many wheels must be made to minimize the cost?
Do not round your answer.
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Owners of a recreation area are filling a small pond with water. Let y represent the total amount of water in the pond (in liters). Let x represent the total number of minutes that water has been added. Suppose that x and y are related by the equation y=32x+400
What was the starting amount of water in the pond?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A functions relates the input p to the output u= 3 + 2p
Which is the independent variable for this function?
p
u
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