Lesson #3
Equations of Lines


Quote of the Day:  "Obvious is the most dangerous word in mathematics."
                        -- E.T. Bell

Objectives:
	The student will review definitions of slope and angle of 
            	inclination.
	The student will determine the equation of a line given appropriate 
		information.
	The student will determine if two lines are parallel or perpendicular.
	The student will determine the slope and angle of inclination of 
		a line from the equation of a line.
	The student will determine the x- and y-intercepts of a line.
	The student will graph the equation of a line.
        The student will determine the length of a line segment using 
		the distance formula.
	The student will determine the coordinates of the midpoint of a 
		segment.
	The student will determine the equation of a circle.


1. Collect Homework Assignment.

2. Slope 



3. Equations of Lines 

    Examples:
       Determine the equation of a line which passes through the points
            (2, -3) and (-3, 5).
       Determine the slope and y-intercept of  x + 3y = 5.    


4. Midpoint Formula, Distance Formula, and Circles

              Click here for Midpoint Song
              Click here for The Distance Formula Song

5. Linear Invaders Game

6. Assignment:
        p.A26 (13a,d, 16b, 19, 21a, 22a, 33c,d, 46, 49a,b,c) 
        p.71 (5, 10b, 12a, 15, 17, 34, 41a,d)
        Continue to work on Mini Exam Review Sheets.
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