Suppose that y varies inversely with x, and y = 0.2 when x = 2. What is an equation for the inverse variation?

Question

y = 1.8x
y = 0.4/x
x = y/1.8
y = x/0.4

Answer 1

since xy = k, and
0.2*2 = 0.4,
xy = 0.4
or,
y = 0.4/x

Answer 2

You are a great help.

Answer 3

7 yrs later and still correct :)

Answer 4

Still correct 8 years later, and he just helped me figure out how inverse variation worked.