Today's a hot day you fill a water bottle with 2 and 1/3 cups advice 1 and 1/2 cups of ice and 1/4 cup of gatorade mix how many cups is your water bottle filled with

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.