Question

Suppose that x and y are inversely write a function rule for the function that x =9 and y =4

Answer 1

y =
`(36)/(x)`

Explanation:

given that y varies inversely as x then the equation relating them is

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

To find k use the condition x = 9 and y = 4

k = yx = 9 × 4 = 36

y =
`(36)/(x)` ← equation of variation