Solve the System by Using Either the Substitution Method or the Elimination-By-Addition

question 4

Multiple Choice

Solve the system by using either the substitution method or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { l } 8 x - y = - 25 \\9 x + 6 y = - 21\end{array} \right)$$

• A)(-3, 1)
• B)(0, -1)
• C)(-3, -1)
• D)dependent
• E)inconsistent

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