When x and y are in indirect proportion and if y doubles then x becomes_______

Both x and y are in direct proportion, then 1/x and 1/y are

If x and y are in direct proportion then find the value of a and b in

When two quantities x and y are in inverse proportion, then x/y is a constant.

6 is the mean proportion between two numbers x and y and 48 is third proportion to x and y . Find the numbers.

If x and y are in direct proportion, then (x – 1) and (y – 1) are also in direct proportion

If x and y are directly proportional and when x = 13, y = 39, which of the following is not a possible pair of corresponding values of x and y ?

If x, y and z are in continued proportion, then (x + y + z)(x-y+z) = ______ .