O-LevelMathematicsVectors and transformations4024/12 · Oct/Nov 2020 · Q196 Marks
Triangle A, triangle B and the point P (–2, 2) are drawn on the grid.
- (a)(i)Describe, fully, the single transformation that maps triangle A onto triangle B.[2]
- (a)(ii)Write down the matrix that represents this transformation.[2]
- (b)Triangle A is mapped onto triangle C by an enlargement, centre P, scale factor -1/2. On the grid, draw and label triangle C.[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.
- [2] 19(a)(i) Reflection x-axis or y = 0
- B1 for each
- [2] 19(a)(ii) (1 0 / 0 -1)
- B1 for second column correct
- or SC1 for answer (-1 0 / 0 1)
- [2] 19(b) Triangle C at (-4, 1), (-4, 2), (-6, 2)
- B1 for triangle correct size and orientation, wrong centre
- or SC1 for a triangle with vertices at (0, 2), (0, 3), (2, 2) or (–4, 4), (-4, 5), (-6, 4)
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