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O-LevelAdditional MathematicsEquations, inequalities and graphs4037/22 · Oct/Nov 2017 · Q33 Marks

Solve the inequality |3x - 1| > 3 + x.

  1. Solve the inequality |3x - 1| > 3 + x.[3]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.

  1. [B1] Correctly obtain a value of x = 2; Inequality not required
  2. [B1] Correctly obtain a value of x = -1/2; Inequality not required
  3. [B1] x > 2 and x < -1/2; B1dep mark final answer(s). Allow -1/2 < x < 2

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About this question

Topic
Equations, inequalities and graphs, O-Level Additional Mathematics (syllabus 4037). Structured question, 3 marks.
Source
O-Level Additional Mathematics, Oct/Nov 2017 Paper 2 Variant 2, question 3.

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