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# Recognizing functions

10 videos
2 skills
Relationships can be any association between sets of numbers while functions have only one output for a given input. This tutorial works through a bunch of examples of testing whether something is a valid function. As always, we really encourage you to pause the videos and try the problems before Sal does! Common Core Standard: 8.F.A.1

### Testing if a relationship is a function

VIDEO 2:23 minutes
Testing if a relationship is a function

### Relations and functions

VIDEO 6:57 minutes
Relations and Functions

### Graphical relations and functions

VIDEO 4:07 minutes
Graphical Relations and Functions

### Functional relationships 1

VIDEO 4:40 minutes
Functional Relationships 1

### Recognizing functions (example 1)

VIDEO 1:31 minutes

### Recognizing functions (example 2)

VIDEO 1:40 minutes

### Recognizing functions (example 3)

VIDEO 1:16 minutes

### Recognizing functions (example 4)

VIDEO 3:33 minutes

### Recognizing functions

PRACTICE PROBLEMS
Determine if different relationships are functions or not.

### Recognizing functions (example 5)

VIDEO 3:23 minutes

### Functions as graphs

VIDEO 9:35 minutes

### Recognizing functions 2

PRACTICE PROBLEMS