A-level · Algebra & functions

The modulus functionExam-style questions

The modulus as a distance, and what follows from that. The graph of y = |x − a| and how to sketch y = |f(x)|; modulus equations, with two cases or by squaring; modulus inequalities, one stretch or two; why a solution must be checked when the other side contains x; and counting solutions with a horizontal line across the V.

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37 questions · A-level level · mark scheme and worked solution on each · no sign-up to try

DifficultyAllLevel 2Level 3Level 4Level 5
  1. 1
    Solve ∣x+3∣=7|x + 3| = 7. (2 marks)
    Level 2 · 2 marksTry it