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TI-­‐Nspire
CX
Mini-­‐Tutorials
Slope
Formula
Template
Summary of Keystrokes
Create a graph window and add two points:
c2
b71·b71·
(Use ¤¡`¢¤¡`¢to move the pointer to the second point.) ··
Display the coordinates:
b17b17 (Use ¤¡`¢¤¡`¢to move the pointer to the first point.) ··(Use
¤¡`¢¤¡`¢to move the pointer to the second point.) ··
Assign the coordinates to variables:
dd(Use ¤¡`¢¤¡`¢to move the pointer to the x coordinate of the first point.)
/hX1·/hX1· (Repeat for x2, y1, and y2.)
/hY1·/hY1·
/hX2·/hX2·
/hY2·/hY2·
Create a spreadsheet and use the variables in the Slope Formula:
~522/eb4~522/eb4
X1e=X1·X1e=X1·
(Select the “Variable Reference” option. Repeat for x2, y1, and y2.)

2.
www.media4math.com
©2012
Media4Math.
All
rights
reserved.
Y1e=Y1·Y1e=Y1·
X2e=X2·X2e=X2·
Y2e=Y2·Y2e=Y2·
(Now move the cursor to the next row of column A.)
SLOPESLOPEee==(B4(B4--B2)p(B3B2)p(B3--
B1)B1)··
Manipulate the points in the graph and watch the spreadsheet recalculate the midpoint:
/e/e`¢¤¡`¢¤¡aa¡¡