Question

y varies inversely as x. if x = 7 then y = 6. Find y when x = 4.

Answer 1

Answer

10.5

Explanation

Y varies inversely as x

Y ∝ 1/x

Y = k/x  K is the the constant of variation

k = Yx

   = 6 × 7 = 42

Y = 42/x

Y = 42/ 4

  = 10.5