Question

Fill in the blanks in each of the following so as to make the statement true.
(i) Two quantities are said to vary ___ with each other if they increase (decrease) together in such a way that the ratio of the corresponding values remains same.
(ii) x and y are said to vary directy with each other if for some positive number k,___ = k.
(iii) If u= 3 v, then u and v vary___ with each other.

Answer 1

(i) Two quantities are said to vary directly with each other if they increase(decrease) together in such a way that the ratio of the corresponding values remains same.
(ii) x and y are said to vary directly with each
other if for some positive number k,$\frac{x}{y}=k$.
(iii) If u = 3 v, then u and v vary directly with each other.