Friday, December 15, 2006
Algebra (Class 37)
Overview
A Visual Approach to Functions
During this class we focus on connecting graphs of linear relationships (distance compared to time) to tables and equations. Quiz 7 will be given during the last 30 minutes of class.
Key Attitudes
Mathematics is about reasoning.
Key Ideas
Graphs, equations, and tables tell stories if you know how to read them.
If the rate is constant, then the graph will be a straight line.
If the graph is a straight line, then the equation will be linear.
When writing a linear equation to represent the distance as a function of time, y=mx + b, the “y” represents the distance, the “x” represents the time, the “m” represents the rate, and the “b” represents the y-intercept (or “starting distance”).
Key Skills
Plotting points on a graph.
Matching linear equations to graphs and tables.
Verifying that an equation matches a table and graph by substituting and evaluating expressions.
Creating a table of values from data on a graph.
Creating a graph from a table of values.
Assignment
§5-12 (Txt. p.232) #21-26
§5-11 (Txt. p.228) #16-18
§5-9 (Txt. p.222) #16,17
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