Understanding Proportional Relationships

This video covers module 1 lesson 2 on proportional relationships, explaining how to determine when two ratios are proportional. It uses examples like frozen yogurt pricing and recipe ratios to illustrate the concept of constant proportionality. The video includes exercises and solutions to reinforce learning, concluding with a problem set and summary.

What is the main goal of the lesson on proportional relationships?

• To solve algebraic equations

• To understand proportional relationships

• To learn about fractions

• To study geometry

In the frozen yogurt example, what determines if the cost is proportional to the weight?

• The size of the dish

• The number of toppings

• The constant of proportionality

• The flavor of yogurt

What is another term for the constant of proportionality?

• Exponent

• Scale factor

• Variable

• Coefficient

How do you represent the equation for a proportional relationship?

• y = mx + b

• y = x^2

• y = x + c

• y = kx

In the recipe example, what is the constant of proportionality between cups and ounces?

• 4

• 6

• 10

• 8

How many calories does Jose burn if he jumps rope for 6.5 minutes?

• 65

• 80

• 71.5

• 75

What is the constant of proportionality in the weeks and earnings example?

• 20

• 32

• 24

• 28

What is the equation form for a proportional relationship?

• y = kx

• y = x + k

• y = x^k

• y = k/x

In the problem set, what is the constant of proportionality for the cranberry to apple ratio?

• 3/5

• 3/2

• 5/3

• 2/3