Solve the System of Equations by the Substitution Method $$\left\{ \begin{array} { l } \frac { x } { 7 } - \frac { y } { 8 } = 1 \\\frac { x } { 9 } - y = 8\end{array} \right.$$

question 21

Multiple Choice

Solve the system of equations by the substitution method.
- $$\left\{ \begin{array} { l } \frac { x } { 7 } - \frac { y } { 8 } = 1 \\\frac { x } { 9 } - y = 8\end{array} \right.$$

• A) \(( - 8,0 )\)
• B) \(( 0,8 )\)
• C) \(( 8,0 )\)
• D) \(( 0 , - 8 )\)

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Definitions:

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A variable resistor connected in parallel with a circuit element to adjust the flow of current through it, allowing for the control of electrical device performance.

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