Question

qual a equação matricial asssocial a cada sistema a) x-+5y=7 x-4y=0

Answer 1

$\Large\boxed{\begin{array}{l}\begin{cases}\sf x-5y=7\\\sf x-4y=0\end{cases}\\\iff\begin{bmatrix}\sf1&\sf-5\\\sf1&\sf-4\end{bmatrix}\cdot\begin{bmatrix}\sf x\\\sf y\end{bmatrix}=\begin{bmatrix}\sf 7\\\sf 0\end{bmatrix}\end{array}}$