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Unformatted text preview: k is its y-coordinate. Questions: 1. When does a parabola open up? When does it open down? f ( x ) = ax 2 + bx + c f ( x ) = a ( x-h ) 2 + k 2. How do we nd the coordinates of the vertex of a parabola? f ( x ) = ax 2 + bx + c f ( x ) = a ( x-h ) 2 + k 3. How do we nd the equation of axis of symmetry? Examples: 1. Find the quadratic function that has vertex (2,3) and whose graph passes through the point (0,2). 2. Sketch the graph of f ( x ) = 25-x 2 identifying the vertex and intercepts if there are any. 3. Sketch the graph of f ( x ) = x 2 + 3 x + 1 / 4 identifying the vertex and intercepts if there are any....
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This note was uploaded on 01/17/2012 for the course MATH 111 taught by Professor Carolineboulis during the Fall '10 term at Lee.
- Fall '10