If Jesse Can mow 3 yards in 8 hours. Jackson can mow twice as many yards per hour. What is the constant of proportionality between the number of yards Jackson can mow and the number of hours?

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed