What is direct variation in math? This step-by-step guide covers the direct variation definition, what is a direct variation function, and what is the direct variation equation?

A direct variation is a proportionality relationship in which two quantities follow a direct relationship. This implies that an increase (or decrease) in one quantity leads to a …

Jul 23, 2025 · Direct variation is a mathematical relationship between two variables in which one variable is a constant multiple of the other. In other words, when one variable changes, the …

Direct variation is a type of proportionality in which one quantity directly varies with respect to a change in another quantity, by the same factor. This means that an increase in one quantity …

A direct variation is a linear equation that can be written in the form y = kx , where k is a nonzero constant. The number k is called the constant of proportionality or constant of variation.

A direct variation, also called direct proportion is a relationship between two variables x and y that can be written as y = kx, k ≠ 0. This situation occurs when the ratio of two variables is constant.

Here you will learn about direct variation, including the constant of variation, the equation that represents direct variation, and interpreting the graphs of direct variation.

We can use direct variation to describe a specific type of relationship between two variables. Say we wanted to track the number of people who go to the beach and the temperature outside.

When we say that a variable varies directly as another variable, or is directly proportionate to another variable, we mean that the variable changes with the same ratio as the other variable …

Direct variation refers to a relationship between two variables where when one variable increases the other also increases by the same factor. Conversely, when one variable decreases, the …