Penicillin was administered orally to five different horses, and the concentration of...

Penicillin was administered orally to five different horses, and the concentration of penicillin in the blood was determined after five different lengths of time. The following data on x 5 elapsed time (in hours) and y 5 penicillin concentration (in mg/ml) appeared in the paper “Absorption and Distribution Patterns of Oral Phenoxymethyl Penicillin in the Horse” (Cornell Veterinarian [1983]: 314–323):

Construct scatterplots using the following variables. Which transformation, if any, would you recommend?

e. x and log(y) (values of log(y) are 0.26, 0, -0.30, -1, and -1).