Foundation June 2019 Paper 1 Q11
11 Triangles A and B are drawn on the coordinate grid.
(a) Describe fully the single transformation that maps triangle A onto triangle B. [3]
(b)
(i) On the grid, reflect triangle A in the line \(x = 0\).
Label the image C. [2]
(ii) On the grid, translate triangle A by vector \(\begin{pmatrix} -5 \\ -4 \end{pmatrix}\).
Label the image D. [2]
| Answer | Marks | Part marks and guidance |
|---|---|---|
| Rotation | 1 | Do not accept turn for rotation |
| 90[°] clockwise oe | 1 | |
| [Centre] (0,0) | 1 | Condone missing brackets, accept origin or O do not accept \(\begin{pmatrix} 0 \\ 0 \end{pmatrix}\) or vector More than 1 transformation scores 0 |
| Answer | Marks | Part marks and guidance |
|---|---|---|
| (i) Triangle at (–5, 2) (–2, 2) (–2, 4) | 2 | Red overlay B1 for reflection in \(x = k\) or \(y = 0\). Blue overlay or base on green line Condone freehand in both (b)(i) and (ii) |
| (ii) Triangle at (–3, 0) (–3, –2) (0, –2) | 2 | Red overlay B1 for \(\begin{pmatrix} -5 \\ j \end{pmatrix}\) or \(\begin{pmatrix} k \\ -4 \end{pmatrix}\) base on blue line or left side on green line |