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 & 5 \ 3 & y \end{bmatrix} = \begin{bmatrix}[r] 6 & 5 \ 3 & -2 \end{bmatrix}, then the value of x is

1. -2
2. 0
3. 1
4. 2

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

$\text{If A }= \begin{bmatrix$}[r] 0 & 1 \ 1 & 0 \end{bmatrix}, then A² =

1. $\begin{bmatrix$}[r] 1 & 1 \ 0 & 0 \end{bmatrix}

2. $\begin{bmatrix$}[r] 0 & 0 \ 1 & 1 \end{bmatrix}

3. $\begin{bmatrix$}[r] 0 & 1 \ 1 & 0 \end{bmatrix}

4. $\begin{bmatrix$}[r] 1 & 0 \ 0 & 1 \end{bmatrix}