Set format preferences for equations
You can change the font size and look and the numeric format used in equations.
Change the font size and look
Choose Grapher > Preferences.
Click Equations, then do any of the following:
Change default font and size: Click the Default Font & Size box. The Fonts window appears.
Change the element sizes: Drag the Relative Sizes sliders.
Italicize variables: Select Variables in Italic.
Choose the numeric format used in equations
Choose Grapher > Preferences.
Click Numbers, then select the options you want.