Understanding Constant of Proportionality

This video tutorial covers unit 2 on proportional relationships, starting with an introduction and a notice and wonder activity involving paper towels. It explores the concept of constant proportionality through examples like feeding a crowd with rice, making bread with honey and flour, and understanding money with quarters and dimes. The lesson concludes with a summary and instructions for an assignment.

What is the ratio of paper towel rolls to cases if a store receives 60 rolls for 5 cases?

• 1:12

• 60:5

• 5:60

• 12:1

If 2 cups of rice serve 6 people, how many people can be served with 10 cups of rice?

• 30

• 20

• 15

• 25

What is the constant of proportionality when 6 spring rolls serve 3 people?

• 1/2

• 2

• 3

• 1/3

If a bakery uses 8 tablespoons of honey for every 10 cups of flour, what is the constant of proportionality?

• 4/5

• 10/8

• 8/10

• 5/4

How many cups of flour are needed for 20 tablespoons of honey if the constant of proportionality is 5/4?

• 16

• 20

• 30

• 25

If 4 quarters are equivalent to 2 dimes, what is the constant of proportionality?

• 1/2

• 2.5

• 2

• 5/2

How many dimes are equivalent to the value of 6 quarters?

• 10

• 18

• 15

• 12

What does a constant of proportionality of 2.5 mean in the context of quarters and dimes?

• Each quarter is worth 2.5 dimes

• 1 quarter is equivalent to 2.5 dimes

• Each dime is worth 2.5 quarters

• 2.5 quarters are equivalent to 1 dime

In a proportional relationship, what does the term 'unit rate' refer to?

• The ratio of two quantities

• The total amount of one quantity

• The constant of proportionality

• The difference between two quantities

What is the scale factor if 4 tablespoons of chocolate syrup are mixed with 1 cup of milk?

• 1

• 2

• 4

• 1/4