### Lecture 18: solve a system by substitution 1.mov

##### Lecture Details :

The first in a series of videos pertaining to solving a system of linear equations by substitution. For more math shorts go to mathbyfives.com

##### Course Description :

Contents:

Find the domain of a rational expression - Multipling Polynomials - intro to polynomials - add and subtract polynomials - Simplifying algebraic expressions - Like terms - Combine Like terms - Properties of negative exponents - exponents with integers - exponents - exponent properties - Solving a system of equations by addition ellimination 3.mov - Solve a system by substitution - Solve a system by graphing -parallel and perpendicular lines - check if a point is a solution to a system - 3 types of systems - Vertical and horizontal line and their graphs - Graph and find X and Y intercepts - graph a line using a point and a slope - find the slope of a line between two points

Graphing equations in y=mx+b - Find the equation of a line with a point and a slope-derivation of the equation of a line -Meaning of slope-function evaluation and word problems - function domain and range - find the domain of a rational expression - Evaluate a function from a graph - derivation of the slope formula - Vertical Line test - Evaluate functions function notation and conection with linear graphs.mov - functions and relation - Compound Inequalities - systems of inequalities - factoring leading coefficient - System of three variables - AC factoring method - The Quadratic Formula.mov - Solving Linear Equations - Using the General Factoring Strategy - Solving Linear Equations - Factoring The Hard Ones -Factor special forms

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