Function Notation

Presentation

•

Mathematics

•

8th - 9th Grade

•

Hard

Joseph Anderson

FREE Resource

5 Slides • 15 Questions

8.5g Identifying Functions

By Jesus Saldana

Open Ended

What do we remember of finding if tables, graphs and charts are functions?

Type response here

FUNCTION

a specific kind of relationship where every input has exactly one output.

Multiple Choice

Function or not a function

function

not a function

Multiple Choice

Which set of ordered pairs is a function?

{(9,5), (10,5), (9,-5), (10,-5)}

{(3,4), (4,-3), (7,4), (3, 8)}

{(6,-5), (7, -3), (8, -1), (9, 1)}

{(2, -2), (5, 9), (5, -7), (1, 4)}

Multiple Choice

Function or not a function

function

not a function

Fill in the Blanks

The graph of a function must passed the

Type answer...

line test.

Multiple Choice

Function or not a function

function

not a function

Multiple Choice

Is this a function

Function

Not a Function

Multiple Choice

Which of the following is NOT a function?

Multiple Choice

Is this a function?

Function

Not a Function

Poll

How comfortable are you with understanding how to find a function within the various mediums we saw today (Graphing, Tables, Mapping, Ordered Pairs)?

Very Much Ready

Ready but nervous

Somewhat But I Still need guidance

Can we redo, Teacher?

Function Notation

Objective: Evaluate functions written in function notation.

Function Notation

a specific way to write a relation when it is a function.

General Function Notation: f(x)

Said out loud: "f of x"

Example:

y = 3x + 2 is a function.

So it can be written as f(x) = 3x + 2

Multiple Choice

If f(x) = 2x + 1, find f(1).

f(1) = 1

f(1) = 4

f(1) = 0

f(1) = 3

Multiple Choice

Evaluate f(-2) if f(x) = x + 3

-1

-5

Multiple Choice

If I know that f(2) = 4, what is another way I can write my answer?

2,4

(2, 4)

That is the only way to write it.

Multiple Choice

For the function f(x) = -3(x-1) find f(0).

-3

-1

Open Ended

If you are having difficulty with the lesson, what part of the lesson would you like for me to revise or adjust to better help you understand?

Type response here

8.5g Identifying Functions

By Jesus Saldana

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