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Straight Line Graphs

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Question 94

Worldwide CO2 emissions in 1990 were 23.2 billion tonnes.
Worldwide CO2 emissions in 2010 were 35.2 billion tonnes.
Given that A A\,A billion tonnes represents the CO2 emissions n n\,n years after 1990.

a.

Write down the coordinates (n,A)(n, A)(n,A) for 1990 and 2010.

[1]
b.

Using a linear model, form an equation linking A A\,A with nnn.

[2]
c.

In 2016 worldwide CO2 emissions were 40.1 billion tonnes.
Comment on the suitability of your model in light of this information

[3]
Markscheme

Straight Line Graphs Questions

  1. A Level
  2. /Maths
  3. /Straight Line Graphs

260 exam-style questions on Edexcel A Level Maths Straight Line Graphs, 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. Each one has a worked solution and a mark scheme showing where the marks go.

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