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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
8th grade (Eureka Math/EngageNY)
Module 5: Examples of functions from geometry
Topic A: Functions
Worked example: Evaluating functions from equation
Worked example: Evaluating functions from equation
Learn how to evaluate f(x)=49-x² at x=5.
License: CC BY-NC-SA by Khan Academy