Multiple choice questions — task. Mathematics State Board, Class 10.

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1. A system of three linear equations in three variables is inconsistent if their planes

coincides with each other
do not intersect
intersect only at a point
intersect in a line

2. The solution of the system \(x + y - 3z = -6\), \(-7y + 7z = 7\), \(3z = 9\) is

\(x = -1\), \(y = 2\), \(z = 3\)
\(x = 1\), \(y = 3\), \(z = 2\)
\(x = -1\), \(y = -2\), \(z = 3\)
\(x = 1\), \(y = 2\), \(z = 3\)

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