01. Can two people talk to each other without any special device when they are on the surface of the moon? (Assume an imaginary case where the persons are not wearing a spacesuit.)​

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.