Higher June 2018 Paper 4 Q6
6 Triangles A and B are drawn on a coordinate grid.
(a) Describe fully the single transformation that maps triangle A onto triangle B. [2]
(b) Triangle A can also be mapped onto triangle B using a combination of two transformations:
- a transformation T, followed by
- a reflection in the line \(x = 0\).
Describe fully transformation T. [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Reflection | 1 | Double transformation scores 0 | |
| \(y = x\) oe | 1 | ||
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Rotation | 2 | Double transformation scores 0 unless the second one is reflection in \(x = 0\) or in the \(x\)/\(y\) axis. | |
| [centre] (0,0) | 1 | accept origin and O as centre | |
| [+]90 or 90 anti-clockwise or −270 or 270 clockwise | 1 | If 0 scored then award B2 for correct position of the intermediary triangle | use overlay as a guide |