O-LevelMathematicsVectors and transformations4024/11 · May/June 2019 · Q216 Marks
Shapes A and B are drawn on the grid. [Figure of a grid with shape A and shape B drawn]
- (a)Draw the image of shape A after a translation with vector (-4 / 1).[1]
- (b)Draw the image of shape A after an enlargement with scale factor -1/2 and centre (1, 0).[2]
- (c)(i)Shape A is mapped onto shape B by the single transformation P. Describe fully the transformation P.[2]
- (c)(ii)Find the matrix representing transformation P.[1]
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 (May/June 2019). The mark or mark type is shown in brackets.
- [1] Trapezium drawn with vertices (-3,-1) (-1,-1) (1,-3) (-3,-3)
- [2] Trapezium drawn with vertices (1,1) (1,2) (0,1) (-1,2) B1 for correct size and orientation, wrong centre or for correct enlargement scale factor -1/2 centre (1, 0).
- [2] Reflection in the x-axis or y = 0 B1 for either
- [1] (1 0 / 0 -1)
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