Multiple Choice

A project manager is verifying whether a specific resource allocation triple (4,3,4)({}-4, -3, 4) satisfies a system of three linear constraints. The system is defined as follows:

{xy+z=22xyz=62x+2y+z=3\left\{\begin{array}{l} x - y + z = 2 \\ {}2x - y - z = -6 \\ {}2x + 2y + z = -3 \end{array}\right.

After substituting the values into the first constraint, xy+z=2x - y + z = 2, the manager calculates that the left side equals 3. Since 3=2{}3 = 2 is a false statement, what is the definitive conclusion regarding the triple (4,3,4)({}-4, -3, 4)?

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Updated 2026-05-20

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