TI-92 Help -- Graphing a Function

To graph a function start at the home screen and press MODE to get to the MODE screen. It should be set as shown at the right with the Graph option set at FUNCTION.
If the Graph option is set differently arrow right using the cursor pad to see the submenu shown in the screen at the right. Select the FUNCTION Graph mode using the cursor pad and then press ENTER. Then press ENTER again to save the new MODE. Note: You must set the Graph mode to FUNCTION using the MODE menu as described above before setting the WINDOW settings as described below.
Next press Green-diamond WINDOW to get to the WINDOW screen as shown at the right. This screen allows you to set the following items. xmin -- the low end of the x-axis range. xmax -- the high end of the x-axis range. xscl -- the distance between x-axis tick marks. ymin -- the low end of the y-axis range. ymax -- the high end of the y-axis range. yscl -- the distance between y-axis tick marks. xres -- the pixel resolution. Usually this is set at 2 and the calculator computes the values of the function at every other pixel along the x-axis and fills in linearly. Higher numbers produce faster but rougher graphs. When xres is set at 1, functions are evaluated at every pixel along the x-axis. After setting the options as you want them, exit by pressing Green-diamond HOME .
Now press Green-diamond Y= to get to the Y= screen shown at the right. Enter the function or functions that you want to graph. Then press Green-diamond GRAPH to see the graph.
When you graph more than one function on the same screen you may want to be able to distinguish the different graphs. You can specify a different style for each curve in the Y= screen by using the cursor pad to highlight the curve and then pressing F6 to see the STYLE menu as shown in the same screen at the right.
Then use the cursor pad to highlight the style for that curve and press ENTER. Repeat this for each curve. The screen at the right shows three curves using the thick, line, and dot styles.