Sketch the graph of y=∣x∣+8y = |x| + 8y=∣x∣+8
Explain why ∣x∣+8≥∣x+8∣|x| + 8 \geq |x+8|∣x∣+8≥∣x+8∣ for all real values of xxx.
6 exam-style questions on Edexcel A Level Maths 2.1 The Modulus Function. Each one has a worked solution and a mark scheme showing where the marks go.