A **quadratic function** is a function of the form **y=ax^2+bx+c**, where **a**, **b**, and **c** are some numbers, and **a** is not zero.

The graph of the quadratic function is a **parabola**.

When increasing the coefficient **a **the graph is as «compressed», when negative **a** parabola is turned “upside down”, when changing the coefficient **b** the graph is «deviated» to the side, and when changing the coefficient **c** the graph «runs» up and down.

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

Example quadratic function graph:

**y=x^2**

**y=3x^2**

**y=-x^2**

**y=3(x^2)-4**

**y=3-x^2**

All graphics are built with our **graphical calculator**