Question

If y varies inversely as x and y is 6 when x is 12, what is x when y is 14.4? a. 5 b. 0.4 c. 9.6 d. 2.5 Please select the best answer from the choices provided

Answer 1

A. 5

Explanation:

Answer 2

a

given y varies inversely as x then the constant of variation k is

k = xy = 12 × 6 = 72, hence

y =
`(72)/(x)`

when y = 14.4 then

x =
`(72)/(y)` =
`(72)/(14.4)` = 5