The linear function f(x)=x is graphed on a coordinate plane. The graph of a new line is formed by changing the slope of the original line to 1/2 and the y-intercept to 5. Which statement about the relationship between these two graphs is true?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

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)

Math i have no idea how to do a and b