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3.1 Algebra and functions (A-level only)

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Question 21
26%
a.

Sketch the graph of y=∣x∣+5y = |x| + 5y=∣x∣+5

[1]
b.

Explain why ∣x∣+5≥∣x+5∣|x| + 5 \geq |x+5|∣x∣+5≥∣x+5∣ for all real values of xxx.

[2]

3.1 Algebra and functions (A-level only) Questions

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