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1.3 Coordinate geometry in the (x, y) plane

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Question 31

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.

a.

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

[3]
b.

In 2020 the life expectancy in the UK was 81.8 years.

Comment on the suitability of your model in light of this information

[3]

1.3 Coordinate geometry in the (x, y) plane Questions

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  3. /1.3 Coordinate geometry in the (x, y) plane