OCR A-level Mathematics A · H240
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Extreme practice · Multi-step problems within A-level pure maths. Difficulty is an editorial judgement. These questions are self-reviewed, not ranked.
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Original topic practice. This set is not a full official paper. Written work is self-reviewed against our worked solutions.
For k>0, the line y=kx intersects at P and Q, whose x-coordinates are r and s, with r<s.
Show that rs is independent of k. Find k when .
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For this value of k, find the exact area enclosed by the line and the modulus graph.
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