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Next, change variable A from 2 to 5 and see how the graph
changes.
Rewrite the equation based on the numeric values input on the
substitution feature screen.
1. Press { { 5 E.
(The cursor is moved from C
to A and 5 is input.)
The slope of the graph
becomes sharp.
* Move the cursor accordingly and substitute other numeric
values for variables to view how the graph changes.
* The trace function cannot be used in the substitution feature.
(When U is pressed, the full-screen graph will appear.)
2. Press @ h to return
to the equation display
screen.
The equation is written based
on the last numeric values
input on the substitution
feature screen.
* Once @ h have been pressed, the screen cannot be
returned to the previous substitution feature screen.
Chapter 4: Graphing Features
115
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