SOLUTION: Question: Suppose that a system of linear equations is given by Ax=b where, A=(Matrix below) 2 7 1 4 w 0 1 1 1 For what values of 'w' does the system have

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Question 430154: Question: Suppose that a system of linear equations is given by Ax=b where,
A=(Matrix below)
2 7 1
4 w 0
1 1 1
For what values of 'w' does the system have a unique solution?
Thanks in advance.

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
the determinant should be non-zero.
. Hence as long as w is not equal to 24 the system will have a unique solution.