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Published byMerryl Lawrence Modified over 4 years ago

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Quadratic Functions

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How Parabolas Open A parabola will open upward if the value of a in your equations is positive-this type of parabola will have a minimum A parabola will open downward if the value of a is negative-this type of parabola will have a maximum

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Vertex The maximum and minimum point of a parabola is called the vertex The vertex is the lowest or highest point on the parabola

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Symmetry All parabolas will have a line of symmetry The line of symmetry of a parabola is called the axis of symmetry The axis of symmetry separates the parabola so that each side is identical to the other

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Axis of Symmetry

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Graphing Parabolas by Hand

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Practice

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Solutions to Quadratic Equations Solutions to quadratic equations are called roots or zeros. The roots or zeros are also known as x- intercepts.

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Solutions to Quadratic Equations You can have two roots, double roots, or no real root solutions to quadratic equations When would you expect to see – Two roots? – Double roots? – No real roots?

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Find the Roots

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