Constant of Proportionality
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Objective
I can identify the constant of proportionality in a proportional relationship.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
2 questions
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.
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.
Part 3 of 3
Exit ticket
Quick comprehension check
“The graph of a proportional relationship passes through the point (2, 8). What is the constant of proportionality? A table shows a proportional relationship between x and y. When x is 3, y is 12. What is the constant of proportionality? The graph of a proportional relationship passes through the point (5, 2.5). What is the constant of proportionality?”
Sample answer included in the free materials
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