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Determining Whether an Ordered Triple is a Solution: (4,3,4)(-4, -3, 4)

To evaluate whether the ordered triple (4,3,4)(-4, -3, 4) represents a solution to the system of linear equations \left\{\begin{array}{l} x - y + z = 2 \ 2x - y - z = -6 \ 2x + 2y + z = -3 \end{array} ight., substitute the values x=4x = -4, y=3y = -3, and z=4z = 4 into each equation. Testing the first equation yields 4(3)+4=3-4 - (-3) + 4 = 3. Because 33 does not equal 22, the substitution results in a strictly false mathematical statement. Since an ordered triple must successfully satisfy all equations in the system simultaneously, the failure of the first equation definitively proves that (4,3,4)(-4, -3, 4) is not a solution.

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Updated 2026-04-25

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