2-7: Distinguishing Between Proportional and Non-Proportional Situations

Part 1

Example Determining Whether Relationships are Proportional Using Tables

The diagram shows a series of squares drawn on graph paper. The side length and perimeter of each square are labeled.

Use the diagram to complete the table. Draw the next few squares as needed. Write all the ratios in simplest form.

Is the relationship between the perimeter and side length of a square proportional? How do you know?

Solution

Table row 3: Each ratio is equivalent to 4/1.

Since all the ratios are equivalent, the relationship between side length and perimeter of a square is proportional.


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Table of Contents

Digits, Grade 8, Volume 1, Homework Helper Unit A: Number and Operations Unit B: Proportionality Unit C: Expressions, Equations, and Relationships English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties