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Chapter 6-1 Graphing Quadratic Functions

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Which of the following are quadratic functions?

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Let’s review the graph of a quadratic function and what we know about it vertex y-intercept Equation for axis of symmetry x-coordinate of the vertex Open up or open down? Max or Min

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State whether the graph of each quadratic function opens up or down and also if it has a max or min

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For the quadratic function f(x)=x²+2x Find the y-intercept Find the equation for the axis of symmetry Find the x-coordinate of the vertex Make a table of values that includes the vertex Graph the quadratic function Go to graph

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Graph of f(x)=x²+2x x-3-201 f(x)3003 Back

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Finding Max or Min without graph Write a, b, and c for the quadratic function Find the x-coordinate for the vertex Plug this value into the function If graph opens up, result is minimum If graph opens down, result is maximum

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Determine whether each function has a max or min value. Then determine the value of the max or min.

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Homework P290 # 2, 3c, 3d P291 # 14, 18, 20, 26 # 32, 34, 36

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