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60 Activities
Procedure
1. Press z. Select Func and the default settings.
2. Press o. Turn off all functions and stat plots. Enter the Y= function
to describe the fine. Use the TEST menu operations to define the
piecewise function. Set the graph style for Y1 to í (dot).
3. Press p and set
Xmin=L2, Xscl=10, Ymin=L5, and Yscl=10.
Ignore Xmax and Ymax; they are set by @X and @Y in step 4.
4. Press y 5 to return to the home screen. Store 1 to @X, and then
store 5 to @Y. @X and @Y are on the VARS Window X/Y secondary
menu. @
X and @Y specify the horizontal and vertical distance
between the centers of adjacent pixels. Integer values for @X and @Y
produce nice values for tracing.
5. Press r to plot the function. At what speed does the ticket
exceed 250?
Graphing Inequalities
Problem
Graph the inequality 0.4x
3
N 3x + 5 < 0.2x + 4. Use the TEST menu
operations to explore the values of X where the inequality is true and
where it is false.
Procedure
1. Press z. Select Dot, Simul, and the default settings. Setting Dot
mode changes all graph style icons to í (dot) in the Y= editor.
2. Press o. Turn off all functions and stat plots. Enter the left side of the
inequality as
Y4 and the right side as Y5.