The cost of electricity, E, in pounds and the number of kilowatt hours, h, are shown in

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The cost of electricity, E, in pounds and the number of kilowatt hours, h, are shown in the table.

a. Draw a graph of the data.

b. Explain how you know a linear model would be appropriate.

c. Deduce an equation in the form E = ah + b.

d. Interpret the meaning of the coefficients a and b.

e. Use the model to find the cost of 65 kilowatt hours.

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Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

ISBN: 9781292183398

1st Edition

Authors: Greg Attwood

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Question Posted: Jul 14, 2023 11:53 PM

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The cost of electricity, E, in pounds and the number of kilowatt hours, h, are shown in

Question:

kilowatt hours, h cost of electricity, E 45 15 46.8 40 49.8 60 52.2 80 54.6 110 58.2

Step by Step Answer:

a To draw a graph of the data we plot the kilowatt hours h on the xaxis and the cost of electricity ...View the full answer

Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

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