Waec Model Questions Vol1 2018 Mathematics Question 11

Practice essay / theory question 11 from the 2018 Waec Model Questions Vol1 Mathematics examination. This question covers Graphs, Linear interpolation, Rate of change, Interpretation .

Waec Model Questions Vol1 2018 Mathematics Essay / Theory
Topics: Graphs Linear interpolation Rate of change Interpretation
Question 11 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • MATHEMATICS • essay
Waec Model Questions Vol1 2018 Mathematics Question 11 diagram

The graph below shows the fuel consumption (in litres per 100 km) of a car when it travels at various constant speeds (in km/h).

Question Parts

( a )
Calculate the average rate of change of fuel consumption with respect to speed between 60 km/h and 100 km/h. Express your answer in litres per kilometre per hour.
( b )
Using linear interpolation, estimate the fuel consumption of the car when it travels at 90 km/h.
( c )
Determine the speed at which the car would consume exactly 9 litres per 100 km, assuming the same linear relationship between 80 km/h and 100 km/h.
( d )
Explain, in brief, what the graph reveals about the effect of speed on the car’s fuel consumption.

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About This Question

This is Waec Model Questions Vol1 2018 Mathematics Question 11. It is one of the essay questions from the 2018 Waec Model Questions Vol1 Mathematics examination.

The question covers Graphs, Linear interpolation, Rate of change, Interpretation .

View More Waec Model Questions Vol1 2018 Mathematics Questions More Waec Model Questions Vol1 Practice Questions Back to Questions

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