, x and y show direct variation.
Explanation:
Step 1:
For x and y to show direct variation, they should be proportional to each other.
This means for x and y to be in direct variation, they should be of the form
where k is the constant of proportionality.
If we simplify the given equation and get an equation similar to
, x and y show direct variation.
Step 2:
Now we simplify the given equation,
If we subtract
from both sides, we get
This is of the form
where
So x and y show direct variation.