MATH PROPORTIONAL QUESTION PLEASE HELP ITS FOR A TEST :( Which situation represents a proportional relationship between x and y?

Nelson’s age, y, is 3 less than twice the age of his younger sister, x.

Amount of money in Maggie’s account, y, is 3 times the amount of money in Vincent’s account, x.

The height of a tree, y, in x months, if it is 10 inches tall and grows 1 inch every month.

Number of students, y, in a field trip is 10 more than number of teachers, x.