Solving Proportional Relationship Problems Using Graphs

This lesson teaches how to answer questions about proportional relationships using graphs. It covers determining unit rates from graphs, solving problems with different methods, and provides examples like seating arrangements and stamp costs. The lesson encourages creativity in problem-solving and demonstrates multiple approaches to finding solutions.

What is a unit rate in the context of proportional relationships?

• A rate that is always equal to 1

• A ratio comparing two different quantities

• A rate that can only be determined from a table

• A fixed number of units per item

Which of the following is a common misunderstanding about solving problems?

• There are multiple ways to solve a problem

• There is only one correct way to solve a problem

• Problems can be solved creatively

• Sharing solutions with others is beneficial

How many chairs are available per table according to the unit rate in the seating arrangement problem?

• 10 chairs per table

• 3 chairs per table

• 12 chairs per table

• 5 chairs per table

If 12 tables are not enough for 70 parents, how many more tables are needed?

• 4 more tables

• 3 more tables

• 2 more tables

• 1 more table

What is the cost of one stamp based on the given rate in the mailing invitations problem?

• $0.60

• $0.50

• $0.45

• $0.30

How much will it cost to mail 15 invitations?

• $6.00

• $6.50

• $7.00

• $6.75

Which method can be used to directly calculate the cost for 15 stamps?

• Multiply by 20/9

• Multiply by 9/20

• Multiply by 20/15

• Multiply by 15/20