Functions

Domain & Range

Evaluate with Function Notation

Does graph represent a function? State the domain & range.

Vertical line test - if a vertical line will only touch the graph at most 1 time – then the graph represents a function.

Domain: how far left , how far right Range: how low, how high

Included use [ ] Not included use ( )

Does graph represent a function? State the domain & range.

Domain:

(-4, 5]

Range:

[-3, 4)

Function?

Yes

Evaluate for the given value.

The function name is F, and this function is in terms of x.

Replace the variable with indicated value.

find F(-1)F x x 2

Evaluate for the given value.

find F(-1)F x x 2

F 1 1 2

1

1