Direct proportion This table shows how different direct proportion relationships are shown, and their proportion equations for a constant, 𝑘.

Fixed income should be considered a constant in the retirement equation, but that doesn’t mean it should be viewed as stagnant.

Christoph Hoffmann, Constant Differences: Friedrich Wilhelm Bessel, the Concept of the Observer in Early Nineteenth-Century Practical Astronomy and the History of the Personal Equation, The British ...