Rules for rational and irrational numbers

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?