Foundation June 2019 Paper 2 Q14
14 Triangle A is drawn on the grid below.
(a) Enlarge triangle A with scale factor 3 from the centre of enlargement P.
Label the image B. [3]
Label the image B. [3]
(b) Describe fully the single transformation that maps triangle B onto triangle A. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Image at \((2, -1)\), \((5, -1)\) and \((5, 5)\) | 3 | B2 for two vertices correct or M1 for enlargement SF3 with wrong centre or correct centre with wrong SF \(\ne\) 1 | Use overlay, mark intention, condone freehand Must be completely on the grid |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Enlargement [sf] \(\dfrac{1}{3}\) \((-4, -4)\) | 3 | B1 for each | Extra transformations spoils all marks Extra properties, treat as choice Condone P Accept -4, -4 Accept centre as a vector |