Answer
$f\left( x \right)=mx+b$
Work Step by Step
In the provided line graph between estimated world electricity generated by wind in trillions of kilowatt-hours and the year, it is observed that the data points rise. The graph doesn’t appear to represent a quadratic function in which the data points would rise and then fall or vice versa.
Thus, the linear function $f\left( x \right)=mx+b$ can be used to model the data.
