AS June 2022 Paper 1 Q3
3 Which of the following transformations is represented by the matrix
\[\begin{bmatrix} 1 & 0 & 0 \\ 0 & -1 & 0 \\ 0 & 0 & 1 \end{bmatrix}?\]Tick (✓) one box. [1 mark]
- Rotation of \(180^\circ\) about the \(x\)-axis
- Reflection in the plane \(x = 0\)
- Rotation of \(180^\circ\) about the \(y\)-axis
- Reflection in the plane \(y = 0\)
| Scheme | Marks | AO |
|---|---|---|
| Ticks the correct box. | B1 | 1.1b |
| (1 mark) |
Typical solution
Reflection in the plane \(y = 0\)