A quadratic function: f(x) = ax2 + bx + c <span> A, b, and c are not equal to zero. Graph of a </span>quadratic function<span> is a curve called a parabola. </span>
Quadratic functions are second-order equations of the form y=ax^2+bx+c. Their graphs form parabolas. The defining characteristic of a quadratic is that the acceleration of the outputs is a constant.
