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Step & Key Operation
(When using EL-9650/9600c)
*Use either pen touch or cursor to operate.
Display
(When using EL-9650/9600c)
EL-9650/9600c/9450/9400 Graphing Calculator
Notes
2-2
Move the graph y = x
2
to the right by 3.
2-1
(three times)
*
3-3
Save the new graph and observe
the changes in the graph and the
equation.
Notice that pinching or
closing the basic y =
x
2
graph
is equivalent to increasing an
a (>1) within the standard
form y = a (x - h)
2
+ k and
broadening the graph is
equivalent to decreasing an
a (<1).
The Shift/Change feature of the EL-9650/9600c/9450/9400 allows visual understanding
of how graph changes affect the form of quadratic equations.
2-2
Save the new graph and observe
the changes in the graph and the
equation
Notice that movement of the
basic y = x
2
graph to the right
by 3 units in the direction of
the x-axis is equivalent to the
addition of 3 to the x -intercept.
This demonstrates that movement of the graph to the
right means adding an h (>0) in the standard form
y = a (x - h)
2
+ k and movement to the left means
subtracting an h (<0).
3-1
Access Change feature and select
the equation y = x
2
.
*
*
3-2
Pinch the slope of the graph.
CL
ENTER
ENTER
ALPHA
2nd F
SHIFT/CHANGE
B
1
ENTER
ENTER
ALPHA