I need to write the equation of act one of these

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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.

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?