 # Identifying Proportional and Non-Proportional Relationships in Graphs

##### This Identifying Proportional and Non-Proportional Relationships in Graphs lesson plan also includes:

Graph a relationship to find out if it is proportional. The lesson introduces the criteria to determine whether a relationship is a proportional relationship by its graph. Pupils graph relationships and determine whether the resulting graph shows that it is proportional. The lesson is part five in a 22-part series.

CCSS: Designed

##### Instructional Ideas

• Have the class determine the constant of proportionality using the tables
• Lead a discussion on what can be done to make a non-proportional relationship into a proportional relationship
##### Classroom Considerations

• Assumes students know how to plot points
##### Pros

• Lesson plan provides anticipated pupil responses to discussion questions, better equipping you to facilitate the discussion
• The problem set includes the coordinate graphs needed to graph the relationships
##### Cons

• The lines drawn in the answer keys are not all drawn correctly