Worldwide CO2 emissions in 1990 were 22.5 billion tonnes.
Worldwide CO2 emissions in 2010 were 33.6 billion tonnes.
Given that A A\,A billion tonnes is the CO2 emissions n n\,n years after 1990.
Using a linear model, form an equation linking A A\,A with nnn.
In 2016 worldwide CO2 emissions were 35.7 billion tonnes.
Comment on the suitability of your model in light of this information
Practise Edexcel AS Level Maths Straight Line Graphs with exam-style questions for AS Level Maths. 21 questions covering 5.1 y = mx + c, 5.2 Equations of Straight Lines, 5.3 Parallel and Perpendicular Lines, 5.4 Length and Area, and 5.5 Modelling with Straight Lines, matched to the Edexcel AS Level Maths (8MA0) specification and written in Paper 1 and Paper 2 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.