The diagram shows the points O and R and the vectors a and b. [Figure 19.1]
- (a)Given that O𝑃⃗ = 2a, mark and label the position of P on the grid.[1]
- (b)Given that O𝑄⃗ = 2b – a, mark and label the position of Q on the grid.[1]
- (c)Express O𝑅⃗ in terms of a and b.[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 2016). The mark or mark type is shown in brackets.
- [1] (a) the point P marked correctly
- [1] (b) the point Q marked correctly
- [2] (c) -a - 2b oe
- C1 for -a; or for – 2b
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