Question

y varies inversely as three times x. When x = 6, y = 4. Find x when y = 8
okay so I'm not quite sure, but would it end up being x=3?

Answer 1

x=12

Answer 2

actually...x = 3 is right :)

Answer 3

Not even one of the choices.
& lol thanks!

Answer 4

\[y = \frac{k}{3x}\]
\[4 = \frac{k}{3(6)}\]
\[4 = \frac{k}{18}\]
\[k = 72\]
when y = 8
\[y = \frac{k}{3x}\]
\[8 = \frac{72}{3x}\]
\[8 = \frac{24}{x}\]
\[x = \frac{24}{8}\]
\[x = 3\]
is this what you did @sambruce0825 ?