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