Question

Find the variation constant and an equation of variation where y varies inversely as x and y=5 when x = 15.
The variation constant is

Answer 1

y = k/x, where k is the variation constant.

We need to find k.

5 = k/15...This equation leads to the correct value of k (our variation constant).

5(15) = (k/15)(15)

75 = k

Done!