Plz me with this question it is the only one i do not understand

X-intercept=-5 y-intercept=2 the equation of the line is

Select the graph of the solution. click until the correct graph appears. |x| = 3

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.