Which graph shows a proportional relationship? On a coordinate plane, points (2, 3), (3, 8), and (6, 9) are plotted.
On a coordinate plane, points (2, 4), (3, 6), and (5, 10) are plotted.
On a coordinate plane, points (1, 3), (4, 4), and (5, 10) are plotted.
On a coordinate plane, points (2, 9), (5, 4), and (9, 3) are plotted.

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?