Grade 7 | Unit 2 | Lesson 11: Interpreting Graphs of Proportional Relationships | Practice Problems

What is the constant of proportionality in this relationship?

What does the constant of proportionality tell us about the situation?

To make a friendship bracelet, some long strings are lined up then taking one string and tying it in a knot with each of the other strings to create a row of knots. A new string is chosen and knotted with all the other strings to create a second row. This process is repeated until there are enough rows to make a bracelet to fit around your friend's wrist. Are the number of knots proportional to the number of rows? Explain your reasoning.

What information do you need to know to write an equation relating two quantities that have a proportional relationship?