4
(Choose 1 answer)
(See picture)
A. (iv)
B. (i)
C. None of the other choices is correct
D. (ii)
E. (iii)
Write the linear system as a matrix equation in the form AX = B 5x+4y=42 7x+3y=51
(i)[\begin{matrix}5&4\\ 7&3\end{matrix}][\begin{matrix}x\\ y\end{matrix}]=[\begin{matrix}42\\ 51\end{matrix}]
(ii)[\begin{matrix}42&4\\ 51&7\end{matrix}][\begin{matrix}x\\ y\end{matrix}]=[\begin{matrix}5\\ 3\end{matrix}]
(iii)[\begin{matrix}5&4\\ 7&3\end{matrix}][\begin{matrix}\chi\\ y\end{matrix}]=[\begin{matrix}51\\ 42\end{matrix}]
(iv) [\begin{matrix}5&7\\ 4&3\end{matrix}][\begin{matrix}x\\ y\end{matrix}]=[\begin{matrix}42\\ 51\end{matrix}]
