Unit RatesUnit Rates7.RP.1 Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.  

7.RP.2a Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.

7.RP.1 Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.  

7.RP.2a Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.

How much would this cost?

At this gas station, you do not have to buy the whole 6-pack. You only pay for what you buy.

Work in Groups

Discuss the different ways your group solved it.

Write it in a math equation and one of the following: (symbol, graph, table, picture).

(Level 4 quality please)

Be ready to present to class.

Unit ratio

3.29 for 6= 3.29dollars (per) = 0.55 dollars 6 can 1 can

How much for one? $0.54833333

about $0.55

3.29 = ? . 6 5

How much would this cost?

Analyze

What did both groups do?

What does the 0.73 mean?

What does the 1.37 mean?

Analyze

Both of these are UNIT RATES.

Unit Rate is number PER one.

How can you use each method to find out how much 3 bottles costs?

analyze

How can you use each method to find out how much 3 bottles costs?

Discuss in groups.

On your Own

Explanation process:

(Math Writing Expectations)

How much does this cost?Include the following in writing: “unit rate” & “per”