Plz help

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

Hi my sisters and brothers can tell me the answer because i don’t understand the question

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.