Higher June 2022 Paper 2 Q11
11.
(a) Describe the single transformation that maps triangle ABC to triangle PQR. [2]
(b) On the grid above, draw the enlargement of triangle ABC, scale factor −1, centre (0, 3). [2]
| Scheme | Marks | Comments |
|---|---|---|
| Enlargement, centre (4, 5), sf ½ | B2 | B1 for any 2 correct elements Allow from point (4, 5) |
| Scheme | Marks | Comments |
|---|---|---|
| Triangle with vertices (−4, −3), (−8, 5), (−2, 3) | B2 | Allow a good freehand; ignore labels B1 for a triangle with 2 correct vertices or for all 3 correct vertices plotted but not joined OR for an enlargement with scale factor −1, with correct orientation with incorrect placement e.g. use of centre (3, 0) leading to triangle with vertices (4, −3), (−2, −1), (2, −9) If no marks, award SC1 for a correct enlargement of PQR with scale factor −1 and centre (0, 3): (−3, 2), (−6, 3), (−4, −1) |
| (4) |