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1.2.5 Discriminant of a quadratic

1.2.5 Discriminant of a quadratic

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Question 2

A curve has equation y=x2+(k−1)x+9y = x^2 + (k - 1)x + 9y=x2+(k−1)x+9 where k k\,k is a constant.

The line with equation y=3xy = 3xy=3x is a tangent to the curve.

Find the possible values of kkk.

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Markscheme

1.2.5 Discriminant of a quadratic Questions

  1. A Level
  2. /Maths
  3. /1.2.5 Discriminant of a quadratic

8 exam-style questions on OCR (MEI) A Level Maths 1.2.5 Discriminant of a quadratic. Each one has a worked solution and a mark scheme showing where the marks go.

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