Texas Instruments TI-89 Titanium User Manual

Additional Graphing Topics 480
2. As necessary, use D and C to select the applicable function.
Note: To set the tangent point, you can also type its x value and press ¸.
Drawing a Line Based on a Point and a Slope
To draw a line through a specified point with a specified slope, execute the
DrawSlp
command from the Home screen or a program. Use the syntax:
DrawSlp x, y, slope
You can also access DrawSlp from the Graph screen.
1. 2 ˆ
and select
6:DrawSlp. This switches to the Home screen and puts DrawSlp in the
entry line.
3. Move the cursor to the tangent point, and
press ¸.
The tangent line is drawn, and its
equation is displayed.
2. Complete the command, and press
¸.
The calculator automatically switches to
the
Graph screen and draws the line.
DrawSlp 4,0,6.37

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches