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

Question

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

Quizplus · Accepted Answer

Substituting x = -3 into the first equation gives y = 1, which satisfies both equations.

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