Is (3,-3) a solution of y≤ -5x+3

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

An equation where variables are used to represent known values—function notation true or false

How do i do this activity, is appreciated