Suppose that the variable y varies inversely with x. When y is 4, the value of x is 13. Express y as a functio

Question

i need help

Answer 1

y=k/x

4=k/13

k=52

y=52/x

Answer 2

when variables vary inversely, their product is a constant.
in this case xy = k
replacing the values of x as 13 and y as 4 we get
k = 4 x 13 = 52
So the equation becomes xy = 52.
Since we have to express it as a function of y.
y = 52 / x