AS June 2021 Paper 1 Q4

4 The point \((2, -1)\) is invariant under the transformation represented by the matrix \(\mathbf{N}\)

Which of the following matrices could be \(\mathbf{N}\)?

Circle your answer. [1 mark]

• \(\begin{bmatrix} 4 & 6 \\ 2 & 5 \end{bmatrix}\)
• \(\begin{bmatrix} 6 & 5 \\ 4 & 2 \end{bmatrix}\)
• \(\begin{bmatrix} 5 & 2 \\ 6 & 4 \end{bmatrix}\)
• \(\begin{bmatrix} 2 & 4 \\ 5 & 6 \end{bmatrix}\)