Constant of Proportionality
Grade 6•45 minutes
Learning Objective
I can identify the constant of proportionality in a proportional relationship.
Practice Questions
This lesson includes 2 practice questions to reinforce learning.
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1. A bakery sells cookies where the cost (y) is proportional to the number of cookies (x) you buy. If 4 cookies cost $6, what is the constant of proportionality? Explain what the constant of proportionality means in this situation.
2. The distance a car travels (y) is proportional to the amount of gas it uses (x). The constant of proportionality is 25. Write an equation that represents this relationship and explain what the number 25 means in this situation.
Educational Video
Constant of proportionality from graph | 7th grade | Khan Academy
Khan Academy