PreCalculus: Lesson Plan * 11/13/2006

Quickstart
Classify Conics in the General Equation
p.719

Lesson
Chapter 7 - Systems of Equations and Inequalities
Essential Question
How can systems of equations model and solve real-life problems?
7.1: Solving Systems of Equations
Objective: Students will know how to solve systems of equations by substitution and by graphing.

I. The method of substitution p. 489 - 492
Example 1 - Solve a system of equations using substitution
Two linear Equations, one solution
Example 3 - Two solutions
Example 4 - No solution

II. The method of graphing
The solution(s) to a system of equations is the point of intersection of the graphs of the equations.
Explore the graphical representations of systems in Example 1, 3, 4

Example 5 - Solving system of Equations Graphically

III. Applications
Example 6 - Break-even point

Assignment
(Block I)
Writing About Math p. 494
Points of Intersection

Homework
p. 495 -496
# 3 - 36 x 3's, #69