Texas Instruments TI-73 Manual Book page 6

4. Select
The Number Line application screen
and any previous entries are displayed.
If necessary, press :, and then
select 1:Yes from the menu to clear
previous entries.
Number Line Options
With Number Line, you can add and subtract positive and
negative values on a number line. After entering the numerical
expression on the entry line, you can then edit or clear the entry,
trace the vectors, adjust the appearance of the number line, and
label various points on it. The first time the Number Line runs,
the line indicator is shown at the default starting point,
previous entries are shown arithmetically or in vectors, since no
previous information has been entered.
Number Line/Fraction Line for the TI-73
1:Number Line
from the menu.
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0
Page 6