Lesson #3
Equations of Lines




Quote of the Day:
"Analytic Geometry immortalized the name of Descartes, and constitutes the greatest single step ever made in the progress of the exact sciences." -- John Stuart Mill"

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. Quiz on Trig

3. Slope



4. 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.

5. Midpoint Formula, Distance Formula, and Circles

Click here for Midpoint Song

Click here for The Distance Formula Song

6. Linear Invaders Game





7. Assignment:

Slope, Parallel & Perpendcular Lines, Angle of Inclination
Equation of a line
p. A14 (68, 69, 70, 71)
Work on Mini Exam Review Sheets.

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Send any comments or questions to: David Pleacher