Application Guide

Graphing a Family of Functions
In a family of functions, each member has its own value for one or more of the
parameters. By entering the parameters as lists, you can use a single expression to
graph a family of up to 16 functions.
For example, the expression f1(x) = {-1,0,1,2} • x + {2,4,6,8} denotes the following four
functions:
f1_1(x)=-1 • x+2
f1_2(x) = 0 • x+4
f1_3(x) = 1 • x + 6
f1_4(x) = 2 • x + 8
To Graph a Family of Functions
1. From the GraphEntry/Edit menu, select Function.
2. Type the expression, using lists to represent the members of the family.
3. Press Enter to graph the functions.
Each member is labeled separately (f1_1, f1_2, and so on) to indicate its sequence
in the expression.
Note: You cannot edit a single function graph to change it to a family of functions.
Graphs Application 173