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# 10.2 - rock is modeled by Find the maximum height of the...

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Warm Up: Evaluate for the following values. 1) 2) 3) a b 2 - 4 2 = = b a 20 15 = = b a 8 2 - = - = b a
Objectives 1) To graph quadratic functions of the form 2) To graph quadratic inequalities c bx ax y + + = 2

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Review Yesterday we talked about the Vertex and the Axis Of Symmetry for parabolas. Who can tell me what those terms mean? If your parabola is in standard form ( ______________) your axis of symmetry will always be x = _____ To find your vertex, Graph the function. Label the A of S, vertex, and find the max/minimum. c bx ax y + + = 2 a b 2 -
Practice: Find: = Make a table 5 6 3 2 + + - = x x y a b 2 -

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Graph 4 10 ) ( 2 + + = x x x f
Graph 3 4 2 2 - - = x x y

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Graph and shade 3 4 2 2 - - x x y
Graph and Shade 4 2 + x y

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Solve A rock is thrown in the air. The path of the

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Unformatted text preview: rock is modeled by . Find the maximum height of the rock and how long it takes the ball to reach its maximum height. 4 48 16 2 + +-= t t h Solve In professional fireworks displays, aerial fireworks carry “stars” upward, ignite them, and project them into the air. The equation gives a star’s height h in feet at time t in seconds. How long will it take for the star to reach its maximum height? How far above the ground will it be? 520 72 16 2 + +-= t t h Homework p 520 # 1,3,11, 13, 15, 16, 17, 22, 25, 35 Highlighted = graph. You must label the axis of symmetry and the vertex!!...
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