Instructions:

• Enter each pair of number by clicking in the small windows below the graph (not the column to the right of the graph) and then clicking on the 'Add' button.
• You cannot change the number once you have entered it (click on 'Clear' and start over if you made a mistake).
• You can change the title and labels on the graph by typing in the spaces and then clicking on the appropriate 'add' button.
• The carat symbol (^) causes text to be in superscript.
• The underscore symbol ( _ ) causes text to be in subscript.
• So for example, to put the chemical symbol for water in a title or label, you would type: H_{2}O to get a label that looks like H₂O.
• The 'Plot Linear Regression' button performs a linear regression analysis on the data. The slope (m) and y-intercept (b) will appear in the small table next to the button.
• The 'Clear All' button clears everything (numbers, regression line, titles, etc.)
• Use the print option in the browser to print the page.