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Module 3 Notes
Tables and formula to describe how the values of one quantity, commonly
known as the
input quantity
is related to another quantity, commonly know
as the
output quantity
.
The mathematical term
function
is used to describe the process that
accepts inputs and produces outputs so that each input is assigned to a
unique output value.
This type of relationship is called a
function
.
Function:
A function consists of three parts: 1) a set of input values; 2) a
set of output values; and 3) a rule by which each input value is assigned to
a unique output value.
The set of input values is called the
domain
of the function and the set of
output values is called the
range
of the function.
To determine the
domain
of a function it’s convenient to ask, are there any
restrictions to the values that can be input into the function? In the case of
the map problem, the only restriction is that it doesn’t make sense for the
number of inches on a map to be negative. So, we say that the domain of
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 Spring '11
 Professorsmith
 Chemistry

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