Van wants to build a square field with a fence around the outside. If he has 104 feet of fencing, what should be the length of each side of his field?

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.