Texas Instruments TI-83 Plus Manual Book page 16

Use options on this screen ... To do this:
MAIN displays the main menu.
COEFS displays the coefficient entry
screen so that you can view or change the
coefficients.
STOa displays a list prompt so that you can
Solution screen
enter the list name where you want the
coefficients stored.
STOx displays a list prompt so that you can
enter the list name where you want the
solutions stored.
STOy stores the polynomial equation to the
next available y-variable in the Y= editor.
TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 16