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Functions and Graphs

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Question 33

(i) Sketch the graph of y=∣x∣+4y = |x| + 4y=∣x∣+4

(ii) Explain why ∣x∣+4≥∣x+4∣|x| + 4 \geq |x + 4|∣x∣+4≥∣x+4∣ for all real values of xxx.

[3]
Markscheme

Functions and Graphs Questions

  1. A Level
  2. /Maths
  3. /Functions and Graphs

471 exam-style questions on Edexcel A Level Maths Functions and Graphs, covering 2.1 The Modulus Function, 2.2 Functions and Mappings, 2.3 Composite Functions, 2.4 Inverse Functions, 2.5 y=|f(x)| and y=f(|x|), 2.6 Combining Transformations, and 2.7 Solving Modulus Problems. Each one has a worked solution and a mark scheme showing where the marks go.

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