## What are key properties of functions?

### Key questions

1. 1

What is a function and what are some examples of functions?

2. 2

What features of functions are visible on a graph?

3. 3

What is an asymptote and what are some functions which have them?

4. 4

What does the graph of the absolute value or modulus function look like?

5. 5

What do we mean by symmetry of a function?

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#### Introducing...

Resource type Title
Rich example What relation are you?
Building blocks Approaching asymptotes
Building blocks That's odd ... or even
Problem requiring decisions Piece it together
Investigation Absolutely!

#### Developing...

Resource type Title
Fluency exercise Odd or even or...
Package of problems Inequality flip-flop
Many ways problem Function squares
Many ways problem Two-way functions
Where does the graph of this modulus function cross $y = 1/x$? R8079