Operation Manual

Chapter 3: Function Graphing 81
You can store values to @X and @Y. If you do, Xmax and Ymax are calculated from @X, Xmin, @Y, and
Ymin.
Note: The ZFrac
ZOOM settings (Zfrac1/2, ZFrac1/3, ZFrac1/4, ZFrac1/5, ZFrac1/8, ZFrac1/10) change @X
and @
Y to fractional values. On the TI-84 Plus C, these settings also change the TraceStep to fractional
values. If fractions are not needed for your problem, you can adjust @X, @Y, or TraceStep to suit your
needs.
TraceStep
On the TI-84 Plus C Silver Edition, TraceStep sets the step increment for tracing. When you set the
TraceStep, the trace tool moves across the graph in steps of that size.
Setting the Graph Format
Displaying the Format Settings
To display the format settings, press y .. The default settings are highlighted below.
Note: You can also go to the Format Graph screen from the Mode screen by selecting YES at the GoTo
Format Graph prompt. After you make changes, press z to return to the Mode screen.
Format settings define a graph’s appearance on the display. Seq graphing mode has an additional
mode setting (Chapter 6).
Changing a Format Setting
To change a format setting, follow these steps.
1. Press †, ~, }, and | as necessary to move the cursor to the setting you want to select.
2. Press Í to select the highlighted setting.
When the cursor is on a setting that has a menu, follow these steps:
FULL HORIZONTAL GRAPH-TABLE
TraceStep = 2@X
(Function graphing only)
TraceStep = 2@X
(Function graphing only)
TraceStep = 2@X
(Function graphing only)
RectGC PolarGC
Sets cursor coordinates.
CoordOn CoordOff
Sets coordinates display on or off.
GridOff GridDot GridLine
Sets grid off, or displays dots or lines.
GridColor:
Displays a menu to choose a grid color.
Axes:
Displays a menu to choose an axes color, or
to turn off the axes.
LabelOff LabelOn
Sets axes label off or on.
ExprOn ExprOff
Sets expression display on or off.
BorderColor:
Displays a menu to choose a border color.
Background:
Displays a menu to select a background
image or color.
DetectAsymptotes:
Sets asymptotes detection on or off while
plotting a graph.
X
Xmax Xmin–
264
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=
X
Xmax Xmin–
264
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=
X
Xmax Xmin–
184
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=
Y
Ymax Ymin–
164
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=
Y
Ymax Ymin–
80
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=
Y
Ymax Ymin–
144
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=