Anyone know what i do for this?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.