2.4 Linear Functions and Models
I have dreams of orca whales and owls, but I wake up in fear.
-Regina Spektor

Linear Functions
A linear function is of the form
f (x)  mx  b
with slope m and y-intercept b.
10
8
Graph the following
function:

6
3x  4 y  24
4
2
-10 -8 -6 -4 -2
2
-2
-4
-6
-8
-10
4
6
8 10
Linear Model Applications
Your New Year’s resolution is to spend the year getting into
shape . You have decided to join a health club, but are having
troubles with your financing. Choose which club will be the
best choice for you.
a) Fitness plus has a $200 initiation fee and charges $35 per
month dues.
b) Pump-You-Up has a $110 initiation fee and charges $50
per month dues.
c) The Club has no initiation fee and charges $54 per month
dues.
2.4 Linear Functions and Models
Homework: p. 103 # 31 – 39 odd
I have dreams of orca whales and owls, but I wake up in fear.
-Regina Spektor