That the real number system includes the rational numbers and...

Quick preparation

• recognise that the real number system includes the rational numbers and the irrational numbers, and solve problems involving real numbers using…
• investigating the real number system by representing the relationships between irrationals, rationals, integers and natural numbers and discussing…
• using a real number line to indicate the solution interval for inequalities of the form ax+b c; for example, 1.2x-5.4>10.8