how do i find the vertex, axis of symmetry, domain, range, and max or min of a quadratic function?

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A quadratic function is expressed in the form of: $\large ax^2 + bx + c$ where a, b, and c are real numbers, and a ≠ 0. It is also the graph is a parabola. The vertex of a quadratic function is found by using: $\dfrac{-b}{2a}$ The axis of symmetry of a quadratic function is the x-axis of the vertex. The domain of a quadratic function is a set of x-values that make it true. The range of a quadratic function is a set of y-values that make it true. How to find maximum or minimum of a quadratic function: https://www.youtube.com/watch?v=Dc2_RPPk5cs