Question

y varies inversely as twice x. When x = 1, y = 3. Find y when x = 4.

Answer 1

y=k(1/(2x))
3=k(1/2(1))=k(1/2)
k=6
so
y=6/(2x)=3/x=3/4

Answer 2

thanks!

Answer 3

When x = 1, y = 3. Find y when x = 4.
y = k/2x
-> k = 2x y = 2 * 3 = 6
=> y = 6/ 2 * 4 = 3/4