Notes for 9-29-10

Agenda

I bell ringer

II linear function

III domain and range

Objective: students will define functions and identify domains

big picture: linear functions can be used to model real world situations

Page 24 # 18 Example

$ 12000 cost of computer

depreciate by 10% of the purchase price each year. annually $1200

V(y)=-1200y+12000

What is the computer worth after 3 years

V(3)=-1200(3)+12000

V(3)=$8400

Range and domain

valid input

(x)

0 is less than or equal to y is less than or equal to 10

input

0 less than or equal to p() is less than or equal to12000

answer

HOMEWORK IS PAGE 24 #18,20,21