a vet collected data on the average weight of dogs by age in months. interpret the slope and the y- intercept (0,0) of the linear model, using the ordered pair (9,42) round the slope to the nearest hundredth.
a. every month a dog averages a gain of 4.3 pounds and weighs 0 pounds at birth
b. every month a dog averages a gain of 0.21 pounds and weighs 0 pounds at birth
c. every 4.67 months a dog averages a gain of 1 pound and weighs 0 at birth
d. every month a dog averages a gain of 4.67 pounds