Definitions for "Quadratic function"
A function that can be represented by an equation of the form y = ax2 (or ax^2) + bx + c, where a, b, and c are arbitrary, but fixed, numbers and a 0. The graph of this function is a parabola.
A polynomial function of degree two of the form
A function of the second degree [i.e., a function of the form f(x) = ax2 + bx + c]; in a rectangular coordinate system, the graph of a quadratic function is a parabola.
a sum of terms, where each term is a (positive or negative) constant (called a coefficient ) multiplied by a single variable or the product of two variables