Direct Instruction Lesson - Exploring Proportional Relationships

Proportional Relationships - Tables and Graphs

What will we learn today?

To determine whether two quantities are proportional by graphing them on a coordinate plane and analyzing data from a table.

​The ratio of x/y for each value is -0.33....

Therefore the relationship is PROPORTIONAL!

Multiple Choice

Is the relationship between the two quantities proportional or non proportional?

• Proportional, the ratios are constant

• Proportional, the relationships are different

• Non-proportional
• Non, proportional because the unit rate is not constant

​Fill in the chart and determine the relationship.

Math Response

How much will it cost to rent the popcorn machine for 2 hours?

Type answer here

Correct Answer: 72

Deg^°

Rad

Math Response

How much will it cost to rent the popcorn machine for 3 hours?

Type answer here

Correct Answer: 92

Deg^°

Rad

Math Response

How much will it cost to rent the popcorn machine for 4 hours?

Type answer here

Correct Answer: 112

Deg^°

Rad

Word Cloud

Is the number of hours to rent the popcorn machine proportional to the total cost?

Proportional Relationships in Graphs

Multiple Select

Which graphs could represent a proportional relationship?

• A

• B

• C

• D

Plotting Points Review

Graphing

Finish plotting the points and determine the relationship.

Dropdown

The relationship between the number of bags of popcorn and the cost is ​

Select answer