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Math 115: College Algebra, Fall 2009

Reading and Homework Assignments

Week 7

Homework is due on my desk before class begins.

Reading Assignment:

Read: * Read chapter 6 in the book to remind yourself of some of the basic ideas.

Reading Questions:

· How many solutions does an equation with two variables have?

· Is it possible to have an equation with two variables that has no solution?

· What is a linear equation?

· How do we find the intercepts of a linear function?

· Explain what you understand about slope.

· What are different forms of linear equations? What kind of information is easier to gain from each kind?

· Write some comments and questions on these sections.

Homework Assignment:

· Please write on the top right-hand of your homework how long you spent on this homework—writing your pen-pal letter, reading and solving problems.

· Redo all the problems for which you did not earn 100% on the test.

· pp. 217-218, #13,14,15

· pp.223,#12,13

· pp.229-230; #7,8,9, optional: iv

HOMEWORK #14: Due Thursday, October 22^nd:

Homework is due on my desk before class begins.

Reading Assignment:

Read: * Read chapter 7 in the book to remind yourself of some of the basic ideas.

Reading Questions:

· Write a system of simultaneous linear equations (2 equations) that has no solution, or explain why it is not possible.

· Write a system of simultaneous linear equations that has one solution, or explain why it is not possible.

· Write a system of simultaneous linear equations that has an infinite number of solutions, or explain why it is not possible.

· Write a system of simultaneous linear equations that has two solutions, or explain why it is not possible.

· What does it mean for two equations to be equivalent?

· Why does the addition method work for solving systems of linear equations?

· Why does solving by substitutions work for solving systems of linear equations?

· What is an inconsistent system of linear equations?

· Write some comments and questions on these sections.

Homework Assignment:

· Please write on the top right-hand of your homework how long you spent on this homework—writing your pen-pal letter, reading and solving problems.

· Solve the three rate/distance/time questions given in class.

· pp. 244, #12; pp.249-250, #12; pp.257; #17; pp.263, #13; pp.269-270, #11,13; pp.275-276, #11,13,14,15, optional: #iv

· Please take some time to fill out the midterm evaluation that I will send you via email. I take them very seriously.

· On a separate piece of paper, write some questions for Kristi that we can send her in advance of her visit.