O-LevelAdditional MathematicsVectors in two dimensionsMay/June 2025Paper 1 Q119 Marks
The diagram shows the triangle OAB, where OA = a and OB = b. The point P lies on OA such that OP = (3/4)OA. The point Q lies on AB such that AQ = (1/3)AB. The straight line through P and Q meets the straight line through O and B at the point R. It is given that OR = λb and PR = µPQ, where λ and µ are constants.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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