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)