A relationship is defined by the data pairs (1, 4), (2, 7), and (3, 10). Which statement best describes this relationship?

It is proportional because the ratio y/x is constant.

It is non-proportional because the ratio y/x is not constant.

It is proportional because y increases as x increases.

It is non-proportional because the numbers are all positive.

A movie streaming service charges a 5 dollars sign-up fee, plus 1 dollar per movie watched. Which statement is true about the relationship between total cost ($y$) and movies watched ($x$)?

The relationship is proportional because the cost per movie is constant.

The relationship is proportional because the sign-up fee is constant.

The relationship is non-proportional because of the 5 dollars sign-up fee.

The relationship is non-proportional because the cost changes with each movie.