Can someone plz help me? Here is the question: Maps are one common place to find scales.

Here is a map of part of a town.

Approximately how far away is Aki’s house from the pizza place?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.