Functions - Cool math Algebra Help Lessons - What's a Function? (Intro to Domain and Range)

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Coolmath Algebra
Functions Lesson 1 - What's a Function? (Intro to Domain and Range) (page 4 of 5)
---- This algebra lesson explains the concept of a function and introduces the concepts of domain and range

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THE RULE: Square it!
(You figure out the outputs.)

input: 4 -> rule: ( )^2 -> output: __ ... input: -3 -> rule: ( )^2 -> output: __ ... (be careful!)

input: 0 -> rule: ( )^2 -> output: __ ... input: square root of 7 -> rule: ( )^2 -> output: __

What's the domain? ________________

What's the range? ________________

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