Lesson Plan

Inverse Functions

Curated and Reviewed by Lesson Planet

Undo the functions. Learners refresh their knowledge of inverses of functions from Algebra II in the 19th section of a 23-part Precalculus unit. Pupils look at inverses in tables and graphs. They then add to their understanding of inverses by algebraically calculating them and confirming they are inverses through composition.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Lead a discussion on how to tell whether a function's inverse exists
Classroom Considerations
  • It is helpful if the class has an understanding of reflection across the line y = x
  • Requires knowing how to calculate compositions
Pros
  • Contains detailed answer keys that show the algebraic steps involved
  • Provides several scaffolding suggestions throughout the lesson
Cons
  • None
Common Core