9. it took ryan less time to hike down than it did to hike up. ernest thinks that was because ryan jogged down the same trail he went up. emma thinks the trail down was steeper than the trail up. who is correct and why? include a detailed explanation of why each hypothesis does or does not match the graph.

ernest's hypothesis (jogged down the same trail):

emma's hypothesis (steeper trail):

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)