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# Unit 1: Relations and functions

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### Practice

- Reflexive, symmetric and transitive relations (basic)Get 3 of 4 questions to level up!
- Reflexive, symmetric and transitive relationsGet 3 of 4 questions to level up!

### Learn

- No videos or articles available in this lesson

### Practice

- One-one and onto functions (visual)Get 3 of 4 questions to level up!
- One-one functionsGet 3 of 4 questions to level up!
- Onto functionsGet 3 of 4 questions to level up!

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### Practice

- Evaluate composite functionsGet 3 of 4 questions to level up!
- Evaluate composite functions: graphs & tablesGet 3 of 4 questions to level up!
- Find composite functionsGet 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!

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### Practice

- Determine if a function is invertibleGet 3 of 4 questions to level up!
- Restrict domains of functions to make them invertibleGet 3 of 4 questions to level up!

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- No videos or articles available in this lesson

### Practice

- Identify binary operationsGet 3 of 4 questions to level up!
- Commutative and associative binary operationsGet 3 of 4 questions to level up!

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