**We will say that a function is constant when, as the value of the independent variable** **$X$**** increases, the dependent variable** **$Y$**** remains the same.**

Let's assume we have two elements $X$, which we will call $X1$ and $X2$, where the following is true: $X1<X2$, that is, $X2$ is located to the right of $X1$.

- When $X1$ is placed in the domain, the value $Y1$ is obtained.
- When $X2$ is placed in the domain, the value $Y2$ is obtained.

**The function is constant when:** **$X2>X1$**** and also** **\(Y2=Y1)****.**

The function can be constant in intervals or throughout its domain.

**Constant Function**