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

Type or .

"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 equation in the upper right hand corner indicates the 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 equation in the upper left hand corner changes.