Answer
$f\left( x \right)=mx+b$
Work Step by Step
In the provided line graph between the number of feet visibility from the car entering two-lane roadways to posted speed limit of roadways, 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.
