Main Page  Folding Boxes  Gathering Data  Organizing Data  Using the Applet  Questions  Formulas and Graphs
If you express the volume of a box (made from 22 x 18 grid paper
described earlier) as an equation with height x, then the length
is 222x (why? ) and the width is 182x.
x*(222x)(182x) can be plugged into your graphing calculator and
plotted.
It will look like the plots below.
The graph
of x*(222x)*(182x) is at left. 

The window settings on the
calculator look like those at left. 
Above is a trendline added to
the Excel graph of the volume of the boxes. How is the equation that
Excel gives related to the equation we used in the graphing calculator?
