In 1960 the life expectancy in the UK was 71 years
In 1975 the life expectancy in the UK was 73 years
Given that x x\,x years is the life expectancy n n\,n years after 1960.
Using a linear model, form an equation linking x x\,x with nnn.
In 2020 the life expectancy in the UK was 81.8 years.
Comment on the suitability of your model in light of this information
Practise AQA A Level Maths 1.6 C: Coordinate geometry in the (x, y) plane with exam-style questions for A Level Maths. 110 questions covering 1.6.1 Equation of a straight line, 1.6.2 Coordinate geometry of the circle, 1.6.3 Parametric equations of curves (A-level only), and 1.6.4 Parametric equations in modelling (A-level only), matched to the AQA A Level Maths (7357) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.