Explain in your own words what a function is. Use the terms 'input' and 'output' in your explanation.

A function is a relationship where each input has only one output.

Consider the relation represented by the set of points: {(1, 2), (2, 4), (3, 6), (1, 5)}. Is this relation a function? Explain why or why not.

No, this relation is not a function because the input 1 has two different outputs, 2 and 5.

Mapping diagram with unique outputs for each input. Explanation should state that each input maps to only one output.

Table with unique outputs for each input. Explanation should state that each input has only one corresponding output.

Yes, this relation is a function because for every value of x, there is only one corresponding value of y.

Name: Identifying Functions
Author: Insta~Lesson

9th GradeMath60 min

I can determine if a relation is a function using the vertical line test.

12 min

Algebra Basics: What Are Functions? - Math Antics

mathantics

18 min

12 questions • Multiple choice & Short answer

5 min

“Determine if the equation y = x - 5 is a function. Explain your reasoning.”

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