Please help, it's with 100 points
Moving at a constant rate, a trenching machine is advertised as being able to dig 36-foot trenches in 40 minutes. A farmer uses the same machine to dig trenches that are 58.5 feet long, with each trench taking 65 minutes to complete.
Answer the question in a paragraph by using the situation above:
1. Is the coefficient of the x-variable k or m? How do you know?
2. Is the constant b equal to 0? How do you know?