INSTRUCTORS Carleen Eaton Grant Fraser Eric Smith

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• ## Related Books

 3 answersLast reply by: Istvan GerlachSat Mar 17, 2012 8:20 PMPost by Stephen Gaddis on November 26, 2011Prof Fraser,Example 2, on the very last step where you multiply by negative 1 to convert the solution into a positive answer--don't you havce to mutiply 'q' on the left side also by -1 also? If not, why? I thought you had to mult or divide on both sides always. 0 answersPost by Jasmine Valdovinos on August 9, 2011algebra made easy!!!

### More Than One Variable

• Some equations involve more than one variable, say x and y. Sometimes you are asked to solve such an equation for a specified variable, such as y.

• To solve such equations, isolate the variable you are solving for using the standard techniques.

• Sometimes, in more complicated equations, you need to use the distributive property to isolate the variable.

• An important application of this type of problem is to solve a given geometric or scientific formula involving two or more variables for a specified variable.

### More Than One Variable

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• More Than One Variable 0:21
• Strategy 1:02
• Typical Application 1:33
• Example: Circumference
• Example: Perimeter
• Lecture Example 1 2:53
• Lecture Example 2 5:43