Question

If y varies inversely as x and x=5 when y=20, then what is the constant of variation, k?

Answer 1

Answer:

k=100

y the varies inversely as x

$y \alpha {x}^{ - 1}$

that is y is equal to inverse of x

introducing a constant k, you have

$k = x \times y \\ 5 \times 20 \\ 100$