Answer: In Exercises 5558, use matrix multiplication to determine whether each matrix is

Chapter 8, Problem 57

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Matrix Multiplication In Exercises 55-58, use matrix multiplication to determine whether each matrix is a solution of the system of equations. Use a graphing utility to verify your results.

\(\left\{\begin{aligned} -2 x-3 y &=-6 \\ 4 x+2 y &=20 \end{aligned}\right.\)

(a) \(\left[\begin{array}{l} 3 \\ 0 \end{array}\right]\)                      (b) \(\left[\begin{array}{l} 4 \\ 2 \end{array}\right]\)                    (c) \(\left[\begin{array}{r} -6 \\ 6 \end{array}\right]\)                       (d) \(\left[\begin{array}{r} 6 \\ -2 \end{array}\right]\)

Text Transcription:

{ _4x + 2y = 20 ^-2x - 3y = -6

[ _0 ^3]

[ _2 ^4]

[ _6 ^-6]

[ _-2 ^6]