This document is from a mathematics lesson on interpreting graphs of proportional relationships. It provides examples and exercises for students to complete involving a recipe for chocolate chip cookies that uses flour as an ingredient. Students are asked to create charts and graphs showing the proportional relationship between the amount of flour used and the number of dozens of cookies produced. They also identify unit rates and write equations to represent the relationships shown in the graphs.

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Module 1 Lesson 10
Interpreting Graphs
of Proportional Relationships
9/22/15
Homework:
Finish Problem
Set for Lesson 10
Do Now
1.) Quiz tomorrow
2.) CRS and J #2 due
Wednesday
Complete Example 1 on Page S.37

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S.37
Example 1
Grandma's Special Chocolate Chip Cookie recipe, which yields
4 dozen cookies, calls for 3 cups of flour. Using this
information, complete the chart:
Table‐Create a chart
comparing the
amount of flour
used to the amount
of cookies.
Table‐ Is the
number of cookies
proportional to the
amount of flour
used? Explain.
Unit Rate‐What is
the unit rate and
what is the
meaning in the
context of the
problem?

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S.37

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Does the graph show the two
quantities being proportional
to each other? Explain
S.37
Equation‐ Write an equation
that can be used to represent
the relationship.

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Question: Where is the unit rate
located on the graph?
S.42

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a. Record the coordinates of flour of the points from the graph in a
table. What do these ordered pairs (values) represent?

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b. Grandma has 1 remaining cup of sugar. How many dozen
cookies will she be able to make? Plot the point of the graph above.

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c. How many dozen cookies can grandma make if she has no
sugar? Can you graph this on the grid provided above? What do
we call this point?

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Closing:
1.) What points are always on the graph of two quantities that are
proportional to each other?
2.) How can you use the unit rate to create a table, equation, or
graph of a relationship of two quantities that are proportional to
each other?
3.) How can you identify the unit rate from a table, equation, or
graph?