1. Chapter 2 Section 2 Part II
Algebra 2 Notes
January 13, 2009

2. Warm-Ups {(-3.5, 5), (0, -2), (0, 4), (1, -2)}
Create a mapping of the following relation. Determine whether or not it is a function:
{(-3.5, 5), (0, -2), (0, 4), (1, -2)}
Find the slope of the intercepts of the following line:
Find the slope of the line graphed to the right:

3. Quick Review
Point-Slope Form
Standard Form:
Slope-Intercept Form:

4. Writing an Equation
Write in standard form an equation of the line with the slope through the point (8, -1)

5. Try One!
Write in standard form the equation of a line with slope 2 which runs through the point (4, -2)

6. Writing an Equation
Write in point-slope form the equation of the line through the points (1, 5) and (4, -1)
Write in point-slope form the equation of the line through the points (5, 0) and (-3, 2)

7. Special Properties of Lines Page 66
Horizontal Line
Vertical Line
Slope is Zero
Slope is Undefined

8. Special Properties of Lines Continued
Perpendicular Lines
Parallel Lines
Slope:
Opposite Reciprocals of each other
Same Slope
Different y-intercepts

9. Write an Equation
Write an equation of the line through the point (0, 4) and perpendicular to the line:

10. Try One!
Write an equation of the line through the point (5, -3) and perpendicular to the line:

11. Piecewise Activity Page 71
A piecewise function has different rules for different parts of it’s domain.
The different “pieces” of the graph each has its own function
Reminder: What’s a domain?
In a group, do #3, 4, and 5

12. Homework #5
Pg 68 #20, 24, 26, 30, 38, 39, 43, 45, 48, 51, 57, 60