Find the Y -Coordinate of the Solution of the Following $\left\{ \begin{array} { l } x + 7 y - 3 z = - 9 \\2 x - y + z = 6 \\- x + y - z = - 3\end{array} \right.$

question 143

Multiple Choice

Find the y -coordinate of the solution of the following system. $\left\{ \begin{array} { l } x + 7 y - 3 z = - 9 \\2 x - y + z = 6 \\- x + y - z = - 3\end{array} \right.$

• A) y=-3
• B) y=-9
• C) y=8
• D) y=4

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