Question

If you were to solve the following system of equations by using a matrix, which of the following would be your coefficient matrix?
4x-y=16
2x+3y=-18
http://i.imgur.com/vUpVJSA.png

Answer 1

write the co -efficients of x &y in matrix form.
ax+by=c
px+qy=r
then co efficient matrix is
\[\left[\begin{matrix}a & b \\ p & q\end{matrix}\right]\]

Answer 2

So that would make it A?

Answer 3

yes