In this Grade 7 lesson from Reveal Math, Accelerated, students learn how to use tables of equivalent ratios to determine whether two quantities share a proportional relationship. They practice identifying the constant of proportionality by comparing ratios across multiple scenarios, such as trail mix ingredients and popcorn seasoning measurements. The lesson builds foundational understanding of Unit 2: Proportional Relationships by connecting constant ratios to unit rates in real-world contexts.
Section 1
Identifying Proportionality in Tables
Two quantities are in a proportional relationship if the ratio between them is constant. This can be verified using a table by testing for equivalent ratios.
For any pair of corresponding quantities , the ratio must be the same for all non-zero pairs in the table.
Section 2
Finding the Constant of Proportionality
In a proportional relationship, the ratio between two quantities, and , is always constant. This constant value is called the constant of proportionality, represented by the letter . It is also known as the unit rate.
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Section 1
Identifying Proportionality in Tables
Two quantities are in a proportional relationship if the ratio between them is constant. This can be verified using a table by testing for equivalent ratios.
For any pair of corresponding quantities , the ratio must be the same for all non-zero pairs in the table.
Section 2
Finding the Constant of Proportionality
In a proportional relationship, the ratio between two quantities, and , is always constant. This constant value is called the constant of proportionality, represented by the letter . It is also known as the unit rate.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter