I'm pretty sure there's a lot more to life than being really, really,
ridiculously good looking. And I plan on finding out what that is.
5.4: Writing a
Function Rule
I'm pretty sure there's a lot more to life than being really, really,
ridiculously good looking. And I plan on finding out what that is.
-Derek Zoolander
Writing Function Rules
When writing a function rule from a table of values, look for a pattern
relating the independent (output) and dependent (input) variables.
Write a function rule for each table of values.
Ex1)
x
2
4
6
8
y
8
10
12
14
Ex2)
x
1
2
3
4
f(x)
2
5
10
17
Writing Function Rules
Write a function rule for each table of values.
Ex3)
x y
0 -1
1 -2
3 -4
10 -11
Ex4)
x
-2
0
2
4
f(x)
-7
1
9
65
Writing Function Rules
Ex5) The journalism class makes $25 per page of
advertising in the yearbook. If the class sells p
pages, how much money will it earn?
a) Write a function rule to describe this relationship.
b) The class sold 6 pages of advertising. How much
money did the class make?
Writing Function Rules
Ex6) The choir spent $100 producing compact discs of
its last performance and will sell them for $5.50 each.
a)Write a rule to describe the choir’s profit as a
function of the number of compact discs sold.
b)If the choir makes a profit of $604, how many
compact discs did they sell?
5.4: Writing a
Function Rule
Homework # 37:
Page 272
# 6-13, 17, 24, 27
I'm pretty sure there's a lot more to life than being really, really,
ridiculously good looking. And I plan on finding out what that is.
-Derek Zoolander