Question: what is the difference between a quadratic function and a quadratic equation?
Answer: A quadratic equation is an equation of the form ax^2 + bx +c = 0 where x is an unknown, a, b and c are constants with a not equal to 0. ... A quadratic function is a function of a single variable x, with a value y determined by a formula of the form: y = ax^2 + bx + c, where a, b and c are constants.