# Elementary Algebra Review Part 5

Taught by YourMathGal
• Currently 4.0/5 Stars.
7051 views | 1 rating
Part of video series
Lesson Summary:

In this lesson, the instructor goes over evaluating variable expressions using given values, writing and solving Geometry equations given a situation, and finding examples and counterexamples of statements. The transcript provides step-by-step examples for each concept, and also includes some concept problems for the viewer to try on their own.

Lesson Description:

Evaluating variable expressions using given values, writing and solving Geometry equations given a situation, finding examples and counterexamples of statements

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

• How do you evaluate variable expressions with given values of variables?
• How do you evaluate x - y + z when x = 2, y = -3, and z = -4?
• How do you evaluate z - x^3 when x = 2 and z = -4?
• How do you evaluate (x - y)/(z + 2) when x = 2, y = -3, and z = -4?
• How do you evaluate (x^2 - z)/(z - 3x) when x = 2, y = -3, and z = -4?
• If x = 56 degrees, and x and y are complementary angles, how do you find angle y?
• If x = 56 degrees, and x and y are supplementary angles, how do you find angle y?
• Is p + n always positive if p is positive and n is negative?
• Is p - n always positive if p is positive and n is negative?
• Is n - p always positive if p is positive and n is negative?
• How do you know if adding and subtracting positive and negative numbers will always result in a positive number?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson does more with plugging values into variable expressions and evaluating them using order of operations. Every step is explained very clearly again. A couple of examples are done finding angle measures from words as well as determining whether adding and subtracting positive and negative numbers will always result in a positive number.