Learn to define what a quadratic equation is. Discover the quadratic function formula and express quadratic functions in standard, factored and vertex forms.

Learn how to convert quadratic equations from general to vertex form, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to write the equation of a quadratic function given its graph, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

What is a quadratic function? Learn about the quadratic equation, how quadratic functions look when graphed, and examples of how to solve quadratic functions.

The vertex form of a quadratic equation is a formula used to easily identify the minimum or maximum point of a parabola, or the vertex. Learn more about the vertex form and its relationship with ...

Say a quadratic function is given in its factored form. Since this lesson focuses on the y-intercept, one might ask: how to find c in a quadratic equation that is not given in standard form?

To complete the square, take the value of b from the standard form of the quadratic function and plug it into the completing the square formula to produce a perfect square trinomial.

3. Which equation, written in standard form, represents the quadratic function of the following graph? 4. What is the equation of the quadratic function shown in the following figure?

A vertex form is a variation of a quadratic equation that is used to identify the vertex of a quadratic function. This interactive and printable...

In standard form, a parabola is written as a quadratic function y = a x 2 + b x + c, with a, b and c being real numbers and a ≠ 0 (otherwise, it would be a linear function and not a quadratic one).