Modal functions have a module that reverses any value of a function to positive.

For example, **y = |x|**,** y = |x^2 – 8x + 12|** etc.

The variable module is defined as follows:

|x| = x, if х ≥ 0,

|-x| = x, if x < 0.

When constructing a graph, all values are obtained positive, which means that the graph is on the top of the axis X. The part that should be on the negative section X is reflected and continues with positive values.

If the action is not part of the module sign (for example, y=|x|-3), then the center of the graph on the Y axis is offset by 3 units in this case.

**Plot a graph of the modulo function online**

Example modal function graph:

**y=|x|** *abs(x)*

** y = |x^2 – 8x + 12|** *abs(x^2-8x+12)*

**y=|sin(x)|** *abs(sin(x))*

**y=|x^3|+2** abs(x^3)+2

**y=|tan(x)|** *abs(tan(x))*

All module graphs are built with our **graphical calculator**