E-Grapher

E-Grapher is a numerical analysis tool made in 2003 for the TI-83 Plus calculator by Gregory McLeod and published by McLeodGaming. It is made to solve and graph linear equations using the calculator's table and plotting tools.

Function
In order to have linear equations solved and graphed, the user first must enter them in the "Type Equations" menu. Up to four linear equations can be saved at once, and the user can only change the right sides of them, as the left sides only contain their respective y variables. Once entered, the user can then view the solutions to these equations in the table, where they can view any point where the variable x is an integer, and the graph, where they can move the cursor onto any point on a plot. From the "Change Window" menu, the user can alter the way the graph is displayed, including changing the maximum or minimum displayed values or scales of the x-axis or y-axis, as well as the speed at which the graph is plotted.

By resetting on the main menu, the user can erase all saved equations and set the graph window to its default values. In the options menu, the user can set whether the program shows the opening McLeodGaming animation or resets every time it is opened.

Trivia

 * Resetting with this program enables the x-axis and y-axis on the graph to be visible, even though this is off by default and cannot otherwise be changed in the program itself.

External link

 * Download E-Grapher to your computer (requires a TI-83/84 Plus to run).