# Graph Proportional Relationships

Related Topics:
Common Core for Mathematics
More Math Lessons for Grade 8

Examples, solutions, videos and lessons to help Grade 8 students learn how to graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. For example, compare a distance-time graph to a distance-time equation to determine which of two moving objects has greater speed.

Common Core: 8.EE.5

### Suggested Learning Targets

• I can determine the rate of change by the definition of slope.
• I can graph proportional relationships
• I can compare two different proportional relationships represented in different ways. (For example, compare a distance-time graph to a distance-time equation to determine which of the two moving objects has greater speed)
• I can interpret the unit rate of proportional relationships as the slope of a graph.
Graphing, interpreting, and comparing proportional relationships (Common Core 8.EE.5)

Graphing Proportions, Rates & Slope (8.EE.5)
The graph of a proportional relationship is a straight line that goes through the origin.
The constant of proportionality (k) is the constant you get when you divide y and x in a proportional relationship.
The bigger the number represented by k, the steeper the line.

8.EE.5 Graphing Proportional Relationships Understanding and Comparing Graphs of Proportional Data Proportional Relationships And Graphs

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.