4-4   Function Graphing
Pressing 
3
 displays the current mode settings, as described in Chapter 1. For
function graphing, the graphing mode must be set to FUNC. Before you graph a
function, check to be sure that the mode settings are appropriate.
Press 
3
 to display the mode settings. The current settings
are highlighted.
The TI
-
80 has two graphing modes.
¦
FUNC
 (function graphing)
¦
PARAM
 (parametric graphing)
To graph functions, you must select 
FUNC
 (function
graphing).
The basics of graphing on the TI
-
80 are described in this
chapter. Differences in parametric graphing are described in
Chapter 5.
The mode settings can affect how functions are graphed.
¦
RADIAN
 or 
DEGREE
 mode may affect how some functions
are interpreted.
¦
CONNECTED
 or 
DOT
 affects how the selected functions
are plotted.
¦
SEQUENTIAL
 or 
SIMUL
 affects how functions are plotted
if you have more than one function selected.
You can set the graphing mode and other modes from a
program.
Begin on a blank line in the program editor. Press 
3
 to
display the 
MODE
 screen. Press 
8
 and 
7
 to place the cursor
on the mode that you want to select, and then press 
¸
.
The name of the mode is copied to the cursor location.
Setting Graph Modes
Checking and
Changing
Graphing Modes
Setting Modes
from a Program