A3-Comparing Graphical Models
The Choi family owns two cars. Mrs. Choi collects data on the fuel consumption of
each car, and develops the following relationship between the distance driven and
the amount of fuel remaining.
= 60 - 0.08
= 80 - 0.12
represents the amount of fuel remaining, in litres.
represents the distance driven, in kilometres.
a) Use technology to graph both equations on the same axes.
b) What is the initial value of each relation? Explain the significance of these values in
the context of the problem.
c) Compare the rates of change for each relation. Explain the significance of these
values in the context of the problem.