Root Option
The root option is used to find an x intercept. While viewing a graph, press
.
Press 
.
If there is more than one equation being graphed, select the curve by pressing 
or 
, and 
.
The coordinates of the indicated x-intercept appear at the bottom of the screen. In this case
the function intersects the x-axis at about -3.07. To view another root use the
and 
keys.
