2.3 Understand Proportional Relationships

Proportional Relationships

This PDF shows examples of relationships that are proportional and not proportional. Click arrow in upper right corner to enlarge.

Understand Proportional Relationships

Click the arrow in the upper right corner to view the notes to learn how to determine if ratios are proportional.

Solving Proportions

Click the arrow in the upper right corner to see notes for how you can solve proportions.

Example 1: Recognize Proportional Relationship

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2.3 Examples Question 4

Watch the video at the left to see if x and y have a proportional relationship. Ms. Martin used this example in class.

Introduction to Proportional Relationships

Watch this video to learn about proportional relationships...where one variable is always a constant value times another. This constant is known as the "constant of proportionality".

Example 2: Decide Whether Quantities are Proportional

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2.3 Examples Questions 5 and 6

Watch the video at the left to see different examples of finding if given a certain situation there is a proportional relationship. Ms. Martin used these examples in class.

2.3 Examples Question 8

Watch the video at the left to see an example of identifying whether you have a proportional relationship or not. Ms. Martin used this example in class.

Decide Whether Quantities are Proportional

Watch this video to learn one way to tell whether quantities are proportional or not.

Example 3: 

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2.3 Examples Question 11

Watch the video at the left to see an example of identifying a proportional relationship from a table and finding a missing value in a table. Ms. Martin used this example in class.

2.3XL Examples 

Watch the video at the left to see an examples similar to questions you will see on your XL assignment.

Setting Up Proportions to Solve Word Problems

Watch this video to learn how to set up proportions and solve word problems. Note: this video just sets problems up...he doesn't solve them.

Solve Proportions

Watch this video up to the 2:31 minute mark to learn how to solve a basic proportion. Skip to the 4:36 minute mark to see how to solve a word problem using proportions.

Key Concept

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Grade 7: Ratios and Proportional Relationships

Khan Academy covers Common Core questions around Ratios and Proportional Relationships. Click the image on the left or click here to get started.