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# Relations and Functions

## Comparison of two or more sets of values, and cases where input corresponds with exactly one output.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Determine whether the relation is a function - Overview

by CK-12 //basic

Overview

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• Video

## Evaluating Functions - Overview

by CK-12 //basic

Overview

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• Video

## Determine whether the relation is a function - Example 1

by CK-12 //basic

Determine whether a relation is a function using sets of ordered pairs

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• Video

## Evaluating Functions - Example 1

by CK-12 //basic

Evaluate the function using function notation

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• Video

## Evaluating Functions - Example 2

by CK-12 //basic

Evaluate a piecewise function

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• Video

## Evaluating Functions - Example 3

by CK-12 //basic

Finding the difference quotient

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• Real World Application

## Couch Potato

by CK-12 //basic

Find out what your television has to do with functions.

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