Sharp EL-9650 Handbook page 8

Step & Key Operation
(When using EL-9650/9600c)
*Use either pen touch or cursor to operate.
2
2
View the graphs.
-
GRAPH
The Graphing Calculators can be used to draw parallel or perpendicular
lines while learning the slope or y-intercept of linear equations.
1-2
EL-9650/9600c/9450/9400 Graphing Calculator
Display
(When using EL-9650/9600c)
Notes
These lines have slopes that
are negative reciprocals of
1
each other (m = - ). They are
m
called perpendicular. Note that
these intersecting lines form
four equal angles.