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Chapter 6 Section 1 Polynomial Functions Algebra 2 Notes March 26, 2009 Chapter 5 Notebook Quiz 1. 2. 3. 4. 5. What is the definition of the vertex of a parabola? (Sec 5.1; March 2) What is the vertex form of a quadratic function? (Sec 5.3; March 4) What is the definition of the absolute value of a complex number? (Sec 5.6; March 11) What is the definition of completing the square? (Sec 5.7; March 23) If , how many solutions are there? (Sec 5.8; March 23) Notebook Quiz Answers 1. 2. 3. 4. 5. The point at which the parabola intersects the line of symmetry f(x) = a(x –h)2 + k The distance from the origin on the complex number plane. Finding the last term of a perfect square trinomial No real; two imaginary Calculator Steps Finding a Cubic Model for Data First make sure your first Plot is ON in ‘Stat Plot’ 1. 2. 3. 4. 5. 6. 7. 8. Press ‘STAT’ then choose option 1 (Edit) Enter data into the lists. Pres ‘STAT’ ‘CALC’ is highlighted. Choose option 6 (CubicReg), Press ‘ENTER’ Go into y = Press ‘VARS’; choose option 5 (Statistics) ‘EQ’ is highlighted. Choose option 1 (RegEQ) Graph (Press ‘ZOOM’ 9 to get a good window) What Model Works Best? Use the following data: Find a linear model, a quadratic model, and a cubic model for the data. ◦ Graph them all on the same axis Which model works the best? When you’re done hold up your calculator and show me what you found! Finding a Quartic Function Homework #41 Page 309 #1-23 (odd), 3341 (odd), 47-51 (odd)