# Graph Proportional Relationships

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.

Understanding and Comparing Graphs of Proportional Data

Proportional Relationships And Graphs

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