Download Lesson 1-7 Function Notation.notebook

Lesson 1­7 Function Notation.notebook
September 17, 2013
1.7 Function Notation
Table of Contents
Some sets of ordered pairs can be described by using an equation. When the set of ordered pairs described by an equation satisfies the definition of a function, the equation can be written in function notation.
1­7 Function Notation.............................................................#
Goal:
Write and evaluate functions using function notation.
Output value
Input value
Output value
Input value
ƒ(1) = 5(1) + 3
ƒ of x equals 5 times x plus 3.
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3.
4.
2.
1.
ƒ(–2) =
ƒ(–2) =
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5.
Graph the function.
{(0, 4), (1, 5), (2, 6), (3, 7), (4, 8)}
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6.
(Mapping)
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Lesson 1­7 Function Notation.notebook
September 17, 2013
8. A carnival charges a $5 entrance fee and $2 per ride.
Write a function to represent the total cost after taking a certain number of rides.
7.
Make a table.
Graph the points.
x 3x­1
Let r be the number of rides and let C be the total cost in dollars. The entrance fee is constant.
Cost = entrance fee + number of rides taken
C(r)=
What is the value of the function for an input of 12, and what does it represent?
Connect the points with a line because the function is defined for all real numbers
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9. A painter charges $200 plus $25 per can of paint used.
a. Write a function to represent the total charge for a certain number of cans of paint.
Assignment:
b. What is the value of the function for an input of 4, and what does it represent?
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1.7 Worksheet (both sides)
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