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3.1 Algebra and functions (A-level only)

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Question 55
50%
a.

Sketch the graph of y=∣x∣+3y = |x| + 3y=∣x∣+3

[1]
b.

Explain why ∣x∣+3≥∣x+3∣|x| + 3 \geq |x+3|∣x∣+3≥∣x+3∣ for all real values of xxx.

[2]

3.1 Algebra and functions (A-level only) Questions

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