Question

Which linear system of equations does this matrix represent

Answer 1

$.\ \ \ x\ \ \ \ y\\\left[\begin{array}{ccc}-3&5\\2&5\end{array}\right\left|\begin{array}{ccc}15\\-10\end{array}\right]\\\\\left\{\begin{array}{ccc}-3x+5y=15\\2x+5y=-10\end{array}\right \to\boxed{C.}$