Arelation is plotted as a linear function on the coordinate plane starting at point c at (0,-1) and ending at point d at (2,-11) what is the rate of change for the linear function and what is its initial value? select from the drop down menus to correctly complete the statements. the rate of change is -11 or -5 or 0 or 5 and the initial value is -11 or -2 or -1 or 0

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.