A Line Graph is used to view a set of real data graphically. Consider the following data.
| x | 0 | 1 | 2 | 3 | 5 |
| y | 3 | 4 | 8 | 9 | 10 |
To create a line graph of this data, make sure that all the Y's are clear in
the 
menu.
Now select and set an appropriate Viewing Rectangle. Since the x values range from 0 to 5, choose a range slightly larger than that, namely -1 to 6. Since the y values range from 3 to 10, select 0 to 15.
Thus, theViewing Rectangle of [-1, 6,1] by [0, 15, 1], has been selected. To set this Viewing Rectangle, press WINDOWand enter -1 for Xmin, 6 for Xmax, 1 for Xscl, 0 for Ymin, 15 for Ymax,and 1 for Yscl.
Now press 2nd
and then Y= [STAT PLOT]. The calculator screen
should look the one on the left below. 1 is highlighted,
so press ENTER to select the first plot. Now, select ON in the first row, then select the second TYPE.
Xlist and Ylist should already be selected
as 
and 
. The MARK
selected does not matter, so choose one of them.
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To enter the data for the scatterplot, press STAT, and select
1:Edit by pressing ENTER. If the lists
are not all cleared as shown in the screen below, go to see Clearing Lists.
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Enter the data values for X in and the data
values for Y in , keeping each pair together on the same horizontal
line. Then press GRAPH.
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