There are two ways to enter equations in GraphCalc: the easy way, and the hard way. The hard way, is very similar to the way you would enter equations on a TI-85. Choose the Graph tab, then the 2DGraph menu and Options, highlight the Equations tab and enter up to ten expressions. Here you can also select the color for each equation.

What separates GraphCalc from other calculators though, are the numerous easy way to accomplish things. The easy way to enter an equation for graphing is to type it in, in the expression bar. GraphCalc automatically recognizes the letter 'x' or 't' in an expression and enters it into the equation list and graphs it.