Can someone please answer the question I asked like 20 minutes ago. Its due tomorrow im failing almost all my classes

Name the most appropriate metric unit for each measurement

How can you tell when x and y are not directly proportional?

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.