Investigate the different types of slope using graphs and ordered pairs. Scholars use the slope formula to determine the slope of a line between two points. Includes examples with a slope of zero and with no slope. The lesson follows a module in this series exploring linear relationships.

Concepts

slope, vertical lines, horizontal line

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Additional Tags

math

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Instructional Ideas

• Begin with a review of the previous lesson in the series that examines slope as a change in y related to a change in x; derive the slope formula from this relationship
• After determining the slope of a line between two given points, ask learners to graph the line and verify the accuracy of their answer

Classroom Considerations

• Subscript notation can be difficult for young mathematicians to comprehend, so be ready to explain the meaning of the subscripted variables in the formula

Pros

• Provides examples and practice problems that offer adequate practice with each type of slope

Cons

• There is no connection to the previous lesson in the series that describes slope as a change in y over a change in x, as this lesson uses the slope formula exclusively
• Omits real-life connections and application

Common Core

8.EE.B.6