Posted by True on Sunday, July 22, 2012 at 4:54pm.
The following expression represents the value of which variable in the solution of the system of equations below?
|2 -1 1|
|1 2 6|
|3 -1 2|
|2 -1 -2|
|1 2 3|
|3 -1 -1|
D. NONE OF THE VARIABLES ARE REPRESENTED
Math (Alg 2) - Damon, Sunday, July 22, 2012 at 5:08pm
You replace the third column in the NUMERATOR determinant with the right hand side, NOT THE DENOMINATOR to get the third variable, Z. Therefore you got 1/Z
Math (Alg 2) - Damon, Sunday, July 22, 2012 at 5:10pm
Here is a link to Cramer's rule:
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