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Unformatted text preview: one xintercept = the vertex ( TOUCH ). • b 24 ac < 0: zero xintercept ( NOT CROSS NOR TOUCH). Example 3 2 Example 4 Rules to select the RIGHT graph of the quadratic function: f ( x ) = ax 2 + bx + c • Check the sign of a to see if the parabola is open up or down. • Compute the vertex (b 2 a , f (b 2 a )). • If the above steps are not enough to identify the graph, check the xintercepts. Example 5 3 Example 6 Example 7 4...
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This note was uploaded on 05/23/2011 for the course MAC 1147 taught by Professor Nuegyen during the Spring '11 term at FSU.
 Spring '11
 Nuegyen

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