To graph a function, the equation must be entered into the calculator.
to bring up the window where up to 99 equations may be entered.
An equation is deleted using the cursor to select the unwanted
equation and pressing
To get another equation, press until an empty y= appears.
Note: Press to type the variable x.
Press to type a leading negative sign.
Press to type a subtraction symbol.
A equation can be selected or deselected by pressing .
Deselected equations still exist but are not graphed.
Any character in an equation can be deleted. Highlight the character and press
Characters can be inserted in an equation. Highlight the entry after which the characters are to be