use function notation, domain and range, and independent and dependent variables
1.2.3.1
examine examples of inverse proportion
1.2.3.2
recognise features of the graphs of 𝑦=1/𝑥 and 𝑦=𝑎/(𝑥−𝑏) , including their hyperbolic shapes, their intercepts, their asymptotes and behaviour as 𝑥→∞ and 𝑥→−∞
