Inverse Variation (HSC SSCE Mathematics Standard): Flashcards

As one quantity increases, the other decreases proportionally

$y = \frac{k}{x}$ where $k$ is constant

Constant of variation (a fixed number)

$xy = k$

As $x$ increases, $y$ decreases proportionally

Less time

$k$ (the constant)

Find $k$ by substituting known values

One increases → other decreases

Write the equation $y = \frac{k}{x}$