Play machine can make 56 parts and 4 hours. it can also make 70 parts in 5 hours. write an expression that represents the number of parts of machine can make in the time in hours. predict how many parts of machine can make in 9 hours, 30 minutes.

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,

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: