Quadratics
Review question

When is this line a tangent to this parabola?
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Ref: R7328
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Question

Calculate the value of \(k\) for which the line \(y = 2x + k\) is a tangent to the curve \(y = 2x^2 - 4x + 5\).

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UCLES O level Additional Mathematics 1, QP 471/1, 1977, Q13(b)

Question reproduced by kind permission of Cambridge Assessment Group Archives. The question remains Copyright University of Cambridge Local Examinations Syndicate (“UCLES”), All rights reserved.

 Last updated 12-Sep-16
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