Question

Y is inversely proportional to x. when x=3 y=8. work out the value of y when x is 8

Answer 1

3

Step-by-step explanation:

when one is increasing the other one should decrease.since 3 has increased by 5 ,then y should decrease by 5.

Answer 2

y = 3

Explanation:

given y is inversely proportional to x then the equation relating them is

y =
`(k)/(x)` ← k is the constant of proportion

to find k use the condition x = 3, y = 8

8 =
`(k)/(3)` ( multiply both sides by 3 )

24 = k

y =
`(24)/(x)` ← equation of proportion

when x = 8 , then

y =
`(24)/(8)` = 3