Question

If y varies inversely as x, and y = 10 as x = 7, find y for the x-value of 10.

Answer 1

your inverse variation for this would be

\[y=\frac{ k }{ x }\]

Answer 2

solve for k, knowing that y=10, and x=7

Answer 3

once you get k, plug that value back into the regular formula for k, and x valued at 10, and solve for y.