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Function Project. Taylor Knighton Date: 9/20/2010. My real world proble m. Lizzy and her friends went to Best Buy, to buy some CD’s it was 3 for 24.00 How much would it be if she bought 5. My Equation. Y = 8x ( 1, 8 ) ( 2, 16 ) ( 3, 24 ) ( 4, 32 ) ( 5, 40 ). Variables.

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Function project

Function Project.

Taylor Knighton

Date: 9/20/2010


My real world proble m
My real world problem

Lizzy and her friends went to Best Buy, to buy some CD’s it was 3 for 24.00 How much would it be if she bought 5.


My equation
My Equation

Y = 8x

( 1, 8 )

( 2, 16 )

( 3, 24 )

( 4, 32 )

( 5, 40 )


Variables
Variables

  • Independent variables- The independent variable is X which is the number of CD’s

  • Dependent variables- The dependent variable is Y which is the amount it cost

  • Y depends on X

  • Yes, it is a function


Domain range
Domain & Range

Domain- all the X values

(1, 2, 3, 4, 5)

Range- all the Y values

(8, 16, 24, 32, 40)


Is it continuous or discrete
Is it continuous or discrete?

Discrete, because that’s as far as you need to go to answer the question.


The stated equation function notation
The stated equation& function notation

Equation;

X 8 = Y

Notation;

F(x)=40(x)


Table
Table.

.

.

.

.

.


Graph
Graph.

.

40

36

32

.

28

.

24

20

16

.

12

.

8

4


Explanation
Explanation

Every CD cost 8 dollars a piece,

& since I want 5 CD’s it will cost 40 dollars total.

& that is my real world problem :)

.

-----

.

24.00$ 3 = 8.00$

8.00$ 5 = 40.00$

X


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