To solve the equation \( xy = 7 \), you can express \( y \) in terms of \( x \):
\[ y = \frac{7}{x} \]
This equation shows that as \( x \) increases, \( y \) decreases, and vice versa. This relationship indicates that \( y \) varies inversely with \( x \).
Since the relationship can be described with the form \( y = \frac{k}{x} \) (where \( k \) is a constant, in this case, \( k = 7 \)), it confirms that this is an inverse variation.
Thus, the -value is \( y = \frac{7}{x} \), and the variation is inverse variation.