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Discussion: All Topics in Algebra
Topic: Is "variable" confusing to students?


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Subject:   RE: Is 'variable' confusing to students?
Author: knewtown
Date: May 8 2009
I still refer to the x in your second example as a variable.  But I do highlight
the idea that only one value of this variable will make the statement true.


For instance
11 = 3x + 4
It is quite fine to substitute 9 in for the variable x, resulting in the
equation
11 = 3*9 + 4 as long as you write underneath that this statement is NOT TRUE.
Or use the slash through the equal sign to denote not equal.

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