I need help fast plz

Find the slope of a line given the following two points

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.

Jack brought 12 pet monkeys. if each monkey cost $45.99, how much money did he spend in all?