# Complementary variables

### From Glossary

If and are the two vectors that satisfy
complementary slackness,
each pair, and are called *complementary variables*.
In linear programming, primal levels and dual prices are complementary variables.

If and are the two vectors that satisfy
complementary slackness,
each pair, and are called *complementary variables*.
In linear programming, primal levels and dual prices are complementary variables.