When a graph is displayed, press to view the calculation for functions menu.

Press to see the seventh option.

To calculate a value of a function for a specific value of x, display the calculations for functions menu then press to select 1.Value.

To calculate the coordinates of a point of intersection of two functions, display the calculations for functions menu then press to select 2.Intsct.

(Or, type .) Press a second time to select 3.Minimum which finds a relative minimum.

Press a third time to select 4.Maximum which finds a relative maximum.

Press a forth time to select 5.x_Incpt which finds an x intercept.

Press a fifth time to select 6.y_Incpt which finds the y intercept.

Press a sixth time to select 6.Inflec which finds a point of inflection.