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Lesson 9-1 Chapter 9 7 Glencoe Algebra 1 Skills Practice Graphing Quadratic Functions Use a table of values to graph each function. State the domain and the range. 1. y = x2 - 4 2. y = 2-x2 + 3 3. y = x - 2x - 6 x y O x y O x y O Find the vertex, the equation of the axis of symmetry, and the y-intercept of the graph of each function. 4. y 2= 2x ...