Question

Assume that y varies directly with x, then solve. If y=-18 when x=6, find x when y=6.

Answer 1

The answer to your question is x = - 2

Explanation:

This is a problem of direct proportions so,

y x

- 18 ⇒ 6

6 ⇒ ?

We do cross multiplication

x =
`(6 x 6)/(-18)`

Simplification

x =
`(36)/(-18)`

Result

x = -2