This Is Confusing, Please answer

What term makes it inconsistent y=2x - 4 ?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.