O-LevelMathematicsVectors and transformations4024/12 · May/June 2024 · Q253 Marks
OCB is a triangle. A is a point on OC such that OA : AC = 1 : 3. X is the midpoint of BC. OA = a and OB = b. Find the position vector of X. Give your answer as simply as possible in terms of a and b. [Figure 25]
- .Find the position vector of X. Give your answer as simply as possible in terms of a and b.[3]
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 2024). The mark or mark type is shown in brackets.
- [3] 2a + 1/2 b final answer
- [2] B2 for BX = 2a - 1/2 b oe
- [2] B2 for CX = -2a + 1/2 b oe
- [1] M1 for a correct vector route for OX along lines of diagram
- [1] B1 for OC = 4a soi
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →