TI-83 Plus Activities 565
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?