two variables 95 videos

Solving a System of Linear Equations in Two Variables
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in two variables.
solving a system in two variables substitution elimination intersection parallel same line 

Absolute Value Inequality Graphs in Two Variables
Algebra Absolute Value
How to solve and graph absolute value inequalities with x and y.
inequality absolute value graphing inequalities with two variables 
Solving Equations two variable terms
PreAlgebra Solving Equations and Inequalities
Simplify each side of an equation before solving with two variable terms

Solving a Linear System in Three Variables with a Solution
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in three variables.
solving a system in three variables elimination substitution 
Solving a Linear System in Three Variables with no or Infinite Solutions
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in three variables that yields no, or many solutions.
solving a system in three variables elimination substitution 
Solving Twostep Equations
Algebra Solving Equations
How to solve twostep equations.
expressions equations solutions 
Two Column Proofs
Geometry Triangles
How to organize a two column proof.
statement reason cpctc prove show congruent triangles 
Graphing One Variable Inequalities
PreAlgebra Solving Equations and Inequalities
Graphing one variable inequalities on a number line

Proving Two Functions are Inverses
Algebra 2 Inverse, Exponential and Logarithmic Functions
How to use algebra to show that two functions are inverses.
proving inverses composition 
The Resultant of Two Forces
Precalculus Vectors and Parametric Equations
How to find the resultant of two forces when they are parallel, opposite, or perpendicular in direction.
Forces Resultant Vector Addition Magnitude Direction The Pythagorean Theorem 
Solving Equations with a Variable on Both Sides
Algebra Solving Equations
How to solve equations with the same variable on both sides.
expressions equations solutions implying like terms combining like terms distributive property 
Solving Equations  one variable term
PreAlgebra Solving Equations and Inequalities
Solving two step equations with integers

Absolute Value Inequalities
Algebra Absolute Value
How to solve and graph absolute value inequalities with one variable.
inequality absolute value graphing inequalities with one variable 
Direct Variation
Algebra Linear Equations and Their Graphs
How to tell if two variables vary directly.
direct variation y intercept constant of variation 
Inverse Variation
Algebra Linear Equations and Their Graphs
How to tell if two variables vary inversely.
inverse variation constant of variation product rule for inverse variation 
Introduction to Functions
Algebra 2 Functions
How to define a function.
function dependent variable independent variable 
Graphing 2 Variable Inequalities
Precalculus Linear Equations and Inequalities
How to graph inequalities in the xy plane.
inequality y = mx+b Cartesian Coordinate plane shading