Post subject: Graphing quadratic equations on a TI-84+ help
Posted: Fri Oct 14, 2011 5:13 pm
Joined: Sat Jun 26, 2010 12:06 pm
Does anybody know how to graph equations on a TI-84+ silver edition graphing calculator after doing the following method?
Press "stat", go to "edit", press "1" for "edit", insert the points, hit "stat" again, go over to "calc," hit "5" for "quadreg" press enter which will give you the values of a, b, and c for y=ax^2+bx+c.
This is where the problem starts, if you go to the "y=" menu and go to y1 and then hit "vars" then "5" for "statistics..." scroll over to "EQ" then hit RegEQ it will only provide the value of a and will also add x and ask you to insert its exponent. Does anyone know how to get the full equation on there? Also, my calculator is on its default settings.
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