Question

For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?

Answer 1

k = 21

Explanation:

`xy = k\\\\Plugging\: x = 7\: and\: y = 3,\: we\; find:\\7* 3 = k\\21 = k\\\huge\red{\boxed{k = 21}}\\`