The value option is used to evaluate a selected function for a particular value of x. Access the value option by pressing .

Type or .

"Eval x =" appears at the bottom of the screen.

Type a value of x. For x = 2, type "2" and the corresponding value of y will be displayed.

The "1" in the upper right hand corner indicates that the first function is being evaluated. The "X" on the graph indicates the location of the point (x,y).

To evaluate other functions already graphed, press the up or down cursor keys. Notice the "1" in the upper right hand corner changes.

For function "2", press .

For function "3", press , again.