Question

If y varies inversely as x, find the constant of variation if y = 2 as x = -9.

Answer 1

HI!!

Answer 2

this means
\[y=\frac{k}{x}\] or \[xy=k\]

Answer 3

okay then what?

Answer 4

in other words to find the "constant of variation" multiply those two numbers together

Answer 5

i.e. \(2\times -9\)

Answer 6

and its -18 right?

Answer 7

Write an appropriate inverse variation equation if y = 7 when x = 2.
what about this one?