Higher June 2017 Unit 2 Q15
15. Describe fully a single transformation that transforms shape A onto shape B. [3]
| Scheme | Marks | Comments |
|---|---|---|
| Enlargement with scale factor -½ and centre ( 7, 4 ) | B3 | Penalise -1 for further incorrect steps. Award B2 for reference to any two of ‘Enlargement’, ‘-½’ and ‘centre (7, 4)’ either identified by coordinates or joining corresponding vertices on the grid. Award B1 for reference to any one of ‘Enlargement’, ‘-½’ and ‘centre (7, 4)’ either identified by coordinates or joining corresponding vertices on the grid. SC2 awarded for the correct two step transformation from shape A to B, e.g. enlargement SF ½ centre origin, rotation 180° about (5.25, 3) or enlargement SF ½ and 180° rotation, (both) with centre (7, 4). |
Corrected by Westie's Workshop
- The board's mark scheme printed “(both) with centre (7.4)”. Changed to “(both) with centre (7, 4)” because the centre is the point (7, 4), as in the rest of this mark scheme; the full stop should be a comma.
Original: see the board's mark scheme PDF (link above).