# For the direct variation y = (3/4) when x = (1/8), how do you find the constant of variation and find the value of y when x = 3?

##### 1 Answer

Jan 21, 2017

For direct variation

#### Explanation:

If a variable y varies directly with a variable x, then y is proportional to x.

The statement y is proportional to x, is the same as y equals x times a constant k.

Then we can plug in the case we already know if

So,

Then we have

so we plug in