If x and y vary inversely as each other and
(i) x = 3 when y = 8, find y when x = 4
(ii) x = 5, when y = 15, find x when y = 12
(iii) x = 30, find y when constant of variation = 900
(iv) y = 35, find x when constant of variation = 7
(i) Let
3 | 4 | |
8 |
Therefore y is 6
(ii) Let
5 | ||
15 | 12 |
Therefore x is
(iii) Let y is p
Constant of variation is 900
Therefore p is 30
(iv) Let x is p
Constant of variation is 7
Therefore x is