Casio CFX-9800G Owner's Manual page 121

@To draw lines in the GRAPH or TABLE Mode
Example] To draw the graph for y=2x2-3 and then draw a line from the minimum
point on the graph to the point where x=2 and y=5:
Use the following range parameters:
E s t g a sai sclii-
ee > [MITITRG
Activate the Plot Function, and the pointer appears flashing in the center of the 'display.
Pointer
F3] (Plot)
(F4)(Line)
Note
™Graph Scroll: Function'
scroll it: ,
Use the following range parameters:
[HiT irre