Y - 9 = 15x - 75
y = 15x - 75 + 9
y = 15x - 66 y = mx + c, slope = m
m = slope = 15
I think the answer would be 4.1 because the balloon is 4 kilometers, and 1 kilometer from the station. Put them together and you get 4.1 This answer may OR may not be correct, but I am sure this is the answer.