Is (2, 3), (4, 7), (-12, 6), (10, 15) a function

Yes

no

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.