Question

If y=6 when x=9 , find x when y=12

Answer 1

How did u get 8

Answer 2

Do you know if you're dealing with inverse variation or direct variation?

Answer 3

Direct variation

Answer 4

The formula for direct variation is

y = kx

In the first case, when x = 9 and y = 6, you have
6 = 9k
6/9 = k
2/3 = k

In the second case, they give you y = 12, and ask you to find x. Now k is constant so:

12 = (2/3)x

Thus
x = 12(3/2)
x = 18

Answer 5

Thanks