Ari’s chickens eat their pellets at a constant rate throughout each day.

what is the slope of the line that represents the ounces of pellets eaten?

ari’s chicken pellets

days
2 4 6 8
ounces of pellets remaining 39 33 27 21

If we make the days and ounces be in the ordered pair, the points are: (2, 39), (4, 33), (6, 27), and (8, 21). We may use linear regression from the calculator using the equation,
                                   y = Ax + B
where A is the slope. The value of A from the linear regression is equal to -3.