Suppose that x and y vary inversely, and x = 2 when y = 7. Write the function that models the inverse variation.

A. y=5/x

B. y=14/x

C. y=9/x

D.

y = 3.5x

If they are inversely proportionally we ca say that y=k/x where k is a constant to be found. We can then calculate k by substituting the value of x and y into the equation:

y=k/x

7=k/2

k=14

Therefore we can say that y=14/x

(B)