Use Matrices to Solve the System of Equations $\left\{ \begin{array} { l } 3 x + y = 11 \\x + 3 y = - 7\end{array} \right.$

question 271

Multiple Choice

Use matrices to solve the system of equations. $\left\{ \begin{array} { l } 3 x + y = 11 \\x + 3 y = - 7\end{array} \right.$

• A) (5,-4)
• B) (6,-30
• C) (-5,4)
• D) no solution
• E) infinitely many solutions

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Definitions:

R

A symbol often used to represent resistance in electrical circuits, measured in ohms.

RC Parallel Circuit

An electrical circuit consisting of a resistor (R) and a capacitor (C) connected in parallel with each other.

RC Parallel Circuit

An electrical circuit configuration consisting of resistors (R) and capacitors (C) connected in parallel, affecting current and voltage differently.

R

Symbol commonly used to denote resistance in electrical circuits, measured in ohms (Ω).