If $\begin{bmatrix$}[r] x + 3 & 4 \ y - 4 & x + y \end{bmatrix} = \begin{bmatrix}[r] 5 & 4 \ 3 & 9 \end{bmatrix}, then the values of x and y are

1. x = 2, y = 7
2. x = 7, y = 2
3. x = 3, y = 6
4. x = -2, y = 7

If $\begin{bmatrix$}[r] x + 2y & -y \ 3x & 4 \end{bmatrix} = \begin{bmatrix}[r] -4 & 3 \ 6 & 4 \end{bmatrix}, then the values of x and y are

1. x = 2, y = 3
2. x = 2, y = -3
3. x = -2, y = 3
4. x = 3, y = 2

If $\begin{bmatrix$}[r] x + 2y & 3y \ 4x & 2 \end{bmatrix} = \begin{bmatrix}[r] 0 & -3 \ 8 & 2 \end{bmatrix}, then the value of x - y is

1. -3
2. 1
3. 3
4. 5

If $x\begin{bmatrix$}[r] 2 \ 3 \end{bmatrix} + y\begin{bmatrix}[r] -1 \ 0 \end{bmatrix} = \begin{bmatrix}[r] 10 \ 6 \end{bmatrix}, then the values of x and y are

1. x = 2, y = 6
2. x = 2, y = -6
3. x = 3, y = -4
4. x = 3, y = -6