Question

Which of the following expressions show inverse proportionality? y =kx x =ky y=x/k y=k/x

Answer 1

Two values are said to be inversely proportional when the value of one increases, the other decreases. Hence inverse proportionality is expressed in a fraction

y∝
`(1)/(x)`

as the value of x increases, the value of y will decrease

This is expressed as an equation using the inverse proportionality constant k

y= k.
`(1)/(x)`

or

y=
`(k)/(x)`

Hence the fourth option is the correct answer