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1
Basic Keyboard/ALGEBRA USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
1. Turn the calculator on and press Y= .
2. Press CL to remove an old Y1 expression.
3. Enter the linear equation ( y = 3x + 1 ) for Y1 by pressing 3 x
+ 1 .
4. Enter the viewing window range by pressing ZOOM A (ZOOM)
5 (Default). This establishes the default viewing ranges for graphing
equations. These ranges are -10 < x < 10 and -10 < y < 10.
The scale for the x and y axes are 1.
5. To graph another equation, press Y= CL to access and clear the Y1=
prompt.
6. Enter the next equation, and press GRAPH to view the graph.
7. If the line does not appear in the default viewing window, press
ZOOM 4 (OUT) to enlarge the viewing window.
GRAPHING LINEAR EQUATIONS
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