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# Unit 3: Functions

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## About this unit

A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions.

### Learn

### Practice

- Evaluate functionsGet 3 of 4 questions to level up!
- Evaluate functions from their graphGet 3 of 4 questions to level up!

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### Practice

- Function inputs & outputs: equationGet 3 of 4 questions to level up!
- Function inputs & outputs: graphGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Domain and range from graphGet 5 of 7 questions to level up!
- Determine the domain of functionsGet 3 of 4 questions to level up!

### Learn

### Practice

- Recognize functions from tablesGet 3 of 4 questions to level up!
- Recognize functions from graphsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Positive and negative intervalsGet 3 of 4 questions to level up!
- Increasing and decreasing intervalsGet 3 of 4 questions to level up!

### Learn

### Practice

- Evaluate inverse functionsGet 3 of 4 questions to level up!
- Finding inverses of linear functionsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

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Level up on all the skills in this unit and collect up to 1,200 Mastery points!