Identifying Proportional Relationships
Learning Objective
I can identify proportional relationships from tables, graphs, and equations.
Key Concepts
A proportional relationship exists when the ratio between Y and X is always a constant number.
The graph of a proportional relationship is a line that goes through the origin.
If a graph is linear but does not go through the origin, it is not a proportional relationship.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What is the key characteristic of the graph of a proportional relationship?
2. In a proportional relationship, if x is zero, what must y be?
3. Which of the following equations represents a proportional relationship?
...and 9 more questions
Educational Video
How to visually identify proportional relationships using graphs | 7th grade | Khan Academy
Khan Academy