Question

y varies inversely as twice x. When x = 2, y = 3. Find y when x = 6.

Answer 1

y = k/(2x)
x = 2
y = 3

(3) = k/(2(2))
3 = k/4
k = 12

y = 12/(2x)

Plug in x = 6:
y = 12/(2(6)) = 12/12 = 1