Respuesta :

Answer:

  • y = - 105/x

----------------------

General equation for inverse variation is:

  • y = k/x, where k- coefficient of variation

Find the value of k by substituting values of x and y:

  • - 5 = k/21
  • k = -5*21
  • k = - 105

Substitute the value of k to get the equation:

  • y = - 105/x