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Quadratic Functions and Equations

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
axis of symmetry   A line that divides a plan figure or a graph into two congruent reflected halves.  
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completing the square   A process used to form a perfect-square trinomial.  
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discriminant   b^2 - 4ac  
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maximum   The y-value of the highest point on the graph of the function.  
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minimum   The y-value of the lowest point on the graph of the function.  
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parabola   The shape of the graph of a quadratic function.  
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quadratic equation   An equation that can be written in the form ax^2 + bx +c = 0, where a,b, and c are real numbers and a is not equal to zero.  
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quadratic function   A function that can be written in the form f(x)= ax^2 + bx + c, where a,b, and c are real numbers and a is not equal to zero.  
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vertex   The highest or lowest point on the parabola.  
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zero of a function   For the function f, any number x such that f(x) = 0  
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