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3.1 Quadratic Functions and Models
This document discusses quadratic functions and how to find the vertex of a parabola. It explains that the vertex formula for a quadratic function f(x) = ax^2 + bx + c is x = -b/2a and y = f(-b/2a). Examples are provided of using the vertex formula or completing the square to change a quadratic function into vertex form and find the vertex. Students are assigned practice problems finding vertices through completing the square.
