1. Equations of Lines; Building Linear Functions January 22, 2007

2. Equation of a Line Vertical line Non-vertical line

3. What is the equation of a line with slope -4 passing through the point (3,-1)?

4. Find the equation of the line passing through the points (4,2) and (5,-2).

5. General Form of a Linear Equation

6. Parallel Lines Two nonvertical lines are parallel if and only if their slopes are equal and they have different y-intercepts.

7. Find the equation of the line parallel to 3x+4y=8 containing the point (-1,1)

8. Perpendicular lines Special case – horizontal & vertical Two non-vertical lines are perpendicular if and only if the product of their slopes is -1.

9. Find the equation of a line perpendicular to 4x-y=8 through the point (2,0)

10. Secant Line

11. Find the slope of the secant line of in terms of x and h.