Sketch the graph of y=∣x∣+3y = |x| + 3y=∣x∣+3
Explain why ∣x∣+3≥∣x+3∣|x| + 3 \geq |x+3|∣x∣+3≥∣x+3∣ 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.