Math 8/3.2 Equations from tables and graphs

Water Consumption
The graph shows the relationship between the number of hours a water pump runs and the total volume of water pumped in gallons.

A. What does the point C represent in this situation?

B. What is the unit rate of water pumped per hour?

C. Write an equation to represent the relationship between time (t) and water pumped (w).

D. How much water will the pump move after 8 hours?

E. How long does it take to pump 25 gallons?

​STOP! Answer these questions in your notebook and then click to the next slide.

B

​A

C

D

Dropdown

What does the point C represent in this situation?

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.

The point C means that in ​

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​

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, the pump moves ​

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​

Select answer

Dropdown

What is the unit rate of water pumped per hour?

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.

The unit rate is ​

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Select answer

per ​

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Select answer

Dropdown

Write an equation to represent the relationship between time (t) and water pumped (w).

.

.

​

Select answer

​

Select answer

​

Select answer

​

Select answer

Multiple Choice

How much water will the pump move after 8 hours?

• 30 gallons

• 40 gallons

• 50 gallon

• 60 gallons

Multiple Choice

How long does it take to pump 25 gallons?

• 4 hours

• 5 hours

• 4.5 hours

• 6 hours

​STOP! Answer these questions in your notebook and then click to the next slide.

Write an equation for each table.
y = mx


Remember to find the "m" divide y by the x!

Match

Match the following Table to Equations.

y = 1/3x

y = 1.5x

y = 1/2x

y = 2x

• y = 1/3x

• y = 1.5x

• y = 1/2x

• y = 2x

Poll

I can find equations from tables.

Poll

I can find equations from graphs.