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**Unformatted text preview: **MAC1105 Quadratic Functions Names:___________________________ Group work 4 2 f(x) ax bx c (a 0) = + + = + + = + + = + + September 27, 2011 ____________________________________________________________________________________________ 1. The simplest formula for a parabola is 2 f(x) x = . Graph this function. 2. Draw the graph of 2 f(x) x = - = - = - = - . --------------------------------------------------------------------------------------------------------------------------------------------------------- 3. What does the sign of the leading coefficient tell about the shape of the graph? --------------------------------------------------------------------------------------------------------------------------------------------------------- 4. On the same grid, graph the following quadratic functions. 2 2 2 2 2 2 f(x) x g(x) 2x h(x) 0.5x k(x) x j(x) 2x m(x) 0.5x = = = = - = - = - = - = - = - = - = - = - = - = - = ---------------------------------------------------------------------------------------------------------------------------------------------------------- 5. Where is the vertex of the parabola if the formula is 2 y ax , a = = = = ? ___________ What is the effect of making the leading coefficient larger in absolute value (either more positive or more negative)?...

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