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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Algebra 1 (Eureka Math/EngageNY)
Module 3: Linear and exponential functions
Topic B: Lessons 8-12: Functions intro
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