Question 43
Two quantities x and y are said to vary directly with each other if for some rational number k, xy =k.
False Two quantities x and y are said to vary directly with each other, if xy=k (constant)
Question 22
x and y are said to vary directly with each other, if for, some positive number k,___ =k.
Question 21
Both x and y are said to vary___with each other, if for some positive number k, xy=k.