Y varies with x so y/ x = constant so, y1/x1 = y2/x2 6/9 = 18 / x2 so x2 = ( 9*18)/6 x2 = 27 another solution y varis with x y inceased by 3 times so x must increase 3 time of the intial value x(new) = 9*3 = 27
To find volume you use length x width x height. All sides of a cube or square with always be the same so just use the equation 5 x 5 x 5 to get the answer.
