Difference quotients are easy ... just subtract and divide. Viewers watch an instructional video to learn how to determine the difference quotient of a linear function. The example covers the function f(x) = 2x - 5.

Concepts

linear functions, difference quotient

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Additional Tags

math

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Instructional Ideas

• Use the video as part of an intervention strategy for pupils struggling with the difference quotient
  

Classroom Considerations

• There are additional videos for Example 2 and Example 3, but they cover quadratic functions
• Learners must be able to evaluate formulas involving function notation
  

• This video is hosted on YouTube

Pros

• Completely explains each step of the process
• Organized presentation aids with understanding
  

Cons

• None