Do-NowMatch with GO

COMPLETE THE DO NOW SILENTLY, INDEPENDENTLY, & IMMEDIATELY

DURING REVIEW I WILL ASK FOR VOLUNTEERS TO SOLVE THESE! EVERYONE ELSE PUT A CHECK NEXT TO A RIGHT ANSWER OR CORRECT IT!

Objective & Essential Understanding

OBJECTIVE: SWBAT state the domain and range of a function and whether a relation is a function, and evaluate a function using the function rule.

ESSENTIAL UNDERSTANDING: Relations are sets of paired data on the coordinate plane. Functions are relations where one X is paired with one y.

We are entering algebra! Its Very Exciting!

What is Domain and Range?• Domain is all the X coordinates in

a coordinate pair• Range is all the Y coordinates in a

coordinate pairDomain Range (4, 2) (6, -2)

Silently think about the answer & jot down your ideas

Test: Which is Which?Domain = X Circle Domain!Range = Y Underline Range!

(4, -2) (-1, 0) (9, 2) (-4, -4)

(-5, 2) (-6, -7) (5, 4) (8, 3)

Silently think about the answer & jot down your ideas

Independently: State the Domain & Range

1). (4, -2) Domain: Range:2). (0, 0) Domain: Range:3). (-6, -2) Domain: Range:4). (-1, 3) Domain: Range:

State the Domain and Range

What is a Function?

A function is a relation where each value of the domain (X value) is paired with ONLY ONE value of the range (Y value)

Which is a function?

Another way of saying this:

Each X value can have only one Y value. If it has more than one Y value than it fails the vertical line test (more on this next slide)

Another way of saying this:

Function Mapping:

Draw up a table of Domain and Range and connect them(1, 2) (2, 4) (3, 3) (4, 8) – is this a function?

(3, 2) (4, 8) (3, 4) (5, 2) – is this a function?

Do Independently Function Mapping:

Draw up a table of Domain and Range and connect them(3, 5) (2, 3) (1, 5) (3,0) – is this a function?

(1, 4) (2, 2) (3, 2) (4, 8) – is this a function?