Texas Instruments TI-84+ Guide

Using Tables on the TI-84+ Graphing Calculator
Default Tables:
Enter one or more functions into Y=.
Press 2nd WINDOW to access [tblset].
Change TblStart and the table increment Tbl if desired.
Press 2nd GRAPH to access [table].
The table of values is displayed for all active functions.
Use the UP/DOWN arrows to move through the values and
the RIGHT/LEFT arrows to change columns.
From this screen, press PLUS + to change the table increment,
instead of going back to [tblset] screen.
Dynamic Tables option 1:
To view the Y-values one at a time, use AUTO-ASK:
Press 2nd WINDOW to access [tblset].
Set the Independent variable to AUTO and the Dependent
variable to ASK.
Press 2nd GRAPH to access [table].
The table of values only displays the X-values initially. Arrow
to the desired Y-value column.
Move down the column, pressing ENTER to display the value
for each row. Repeat for additional columns.
This enables you to observe how a function grows or changes
as the X-value increases.

Dynamic Tables option 2:
To enter the X-values one at a time, use ASK-AUTO:
Press 2nd WINDOW to access [tblset].
Set the Independent variable to ASK and the Dependent
variable to AUTO.
Press 2nd GRAPH to access [table].
The table of values is blank initially.
As you enter an X-value, the Y-values will fill in for all columns.
This enables you to set any X-value and compare Y-values for
more than one function (which one reaches target value
first?), or predict a Y-value for a given X-value (guess the rule
scenarios).
Other Options:
Graph-Table Split Screen
Press MODE and choose GRAPH-TABLE
The graph side will be active if TRACE or CALC tools used.
The table side will be active if 2nd GRAPH for TABLE is pressed.
Zooming In with the Table
When examining key points such as intercepts & extrema,
identify the interval of X-values containing the key point. Then
choose a smaller Tbl increment, such as .1 or .01.
For Y = x2–3x –1, we observed a sign change in Y-values
between x = 3 and x = 4. After “zooming in”, we find the X-
intercept will be between 3.3 and 3.4 (closer to 3.3).