| Exam Board | OCR |
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| Module | C1 (Core Mathematics 1) |
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| Year | 2013 |
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| Session | June |
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| Topic | Quadratic Functions |
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9
- Sketch the curve \(y = 2 x ^ { 2 } - x - 6\), giving the coordinates of all points of intersection with the axes.
- Find the set of values of \(x\) for which \(2 x ^ { 2 } - x - 6\) is a decreasing function.
- The line \(y = 4\) meets the curve \(y = 2 x ^ { 2 } - x - 6\) at the points \(P\) and \(Q\). Calculate the distance \(P Q\).