Solve the system of equations using matrices.
-$x-3 y=-11$
$8 \mathrm{x}-4 \mathrm{y}=-48$
A) $(-5,2)$
B) $(-6,3)$
C) $(5,2)$
D) $(5,3)$

Question

Quizplus · Accepted Answer

The system of equations can be represented in matrix form as AX = B, where A is the coefficient matrix, X is the variable matrix, and B is the constant matrix. Solving it using matrices (either by finding the inverse of A or using row reduction), we find that $x = -5$ and $y = 2$, which corresponds to choice A.

Solve the System of Equations Using Matrices x−3y=−11x-3 y=-11x−3y=−11 8x−4y=−488 \mathrm{x}-4 \mathrm{y}=-488x−4y=−48

Solve the System of Equations Using Matrices $x-3 y=-11$ $8 \mathrm{x}-4 \mathrm{y}=-48$