For this activity, choose a line graph.  Click on options to edit the design.  When the design is complete, click on the data tab to the right of the picture.  Edit the title and label each axis.  Change to number of points to plot by changing the number of items.  Initially, have the students click on the line width drop down menu and choose no line.  After the points are plotted and they have chosen the line of best fit, they can add the line to check their answers.  Click on the Preview tab to see the graph.  Save and/or print your graph.