For the system of linear equations 3x + 4y − 5z = 2, −x + 2y + z = 0, 6x − 7y + 8z = −1

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

For the system of linear equations 3x + 4y − 5z = 2, −x + 2y + z = 0, 6x − 7y + 8z = −1, which of the following matrices is the coefficient matrix A? (a) (3−1642−7−518)\begin{pmatrix}3 & -1 & 6 \\ 4 & 2 & -7 \\ -5 & 1 & 8\end{pmatrix} (b) (34−5−1216−78)\begin{pmatrix}3 & 4 & -5 \\ -1 & 2 & 1 \\ 6 & -7 & 8\end{pmatrix} (c) (342−1206−7−1)\begin{pmatrix}3 & 4 & 2 \\ -1 & 2 & 0 \\ 6 & -7 & -1\end{pmatrix} (d) (3451216−78)\begin{pmatrix}3 & 4 & 5 \\ 1 & 2 & 1 \\ 6 & -7 & 8\end{pmatrix}

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