Creating a Midpoint Formula Template

Here is a way to construct a template that calculates the midpoint of any two points you construct.

Create a graphing window.

Press Control-G to hide the entry line.

Add two points to the grid.

Label the coordinates.

Assign each coordinate to a variable.

Use these variables to calculate the midpoint in a spreadsheet formula.

First, create a split screen.

Create a spreadsheet in the new window.

Create formulas for the x- and y-coordinates of the midpoint.

You will be asked if the x1 and x2 refer to the variables you created

or the cell references in the spreadsheet.

Select the Variable Reference option and click OK.

Do this for both x coordinates.

Repeat for the y-coordinates.

As before, select the Variable Reference option.

Do this for each y-coordinate.

Now, as you manipulate the points in the graph window, the spreadsheet automatically

calculates the coordinates of the midpoint.