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 VARSWindow 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 0.4x3 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.