Tuesday, March 04, 2008
Algebra (Class 56)
Lesson Title
Limiting Driving Miles
Overview
Our class today focuses on learning how to solve inequalities involving one and two variables and to create a system of inequalities to represent a situation.
Textbook Sections
§10-7 (Txt. p.490) Graphing Linear Inequalities
The Shapes of Algebra- Investigation 5.1 (p. 69)
Vocabulary
inequality
systems of linear inequalities
region
constraint
Key Attitudes
Math is about investigating and confirming
Key Ideas
Inequalities are used to represent situations where there is a limiting value.
Solutions to inequalities can be graphed on a number line when there is only one variable.
Solutions to inequalities are represented by a region on a two axis graph when two variables are involved.
When multiplying or dividing by a negative value, the direction of the inequality switches.
Key Skills
Solve a linear inequality and graph its solution on a number line.
Find ordered pairs which satisfy two sets of constraints.
Determine the region that satisfies a system of inequalities by trying points.
Write a system of linear inequalities to model a situation
Turn-In (#55)
ACE p.42 #3, 11, 13, 17, 18, 23, 24, 48-52, 58-62
Handouts
No Handouts Posted
Assignment
Test Corrections
ACE p.42 #28-33, 38, 44
ACE p. 78 #13, 15
Disclaimer- The assignment as stated in class is the official assignment. Every effort is made to keep this posting accurate, but you should refer to what was stated in class as the final word.
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