variables 37 videos

Solving Linear Equations
Precalculus Linear Equations and Inequalities
How to solve a linear equation in one variable.
solving linear equations 
Solving Singlestep Equations
Algebra Solving Equations
How to solve single step equations with one variable.
expressions equations solutions2 
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 
Formulas
PreAlgebra Solving Equations and Inequalities
The importance of solving literal equations for a given variable

Distributing
PreAlgebra Polynomials
Distributing a constant, variable, or negative over a polynomial

Solving Linear Equations
Algebra 2 Linear Equations
How to solve a linear equation in one variable.
solving linear equations 
The Method of Substitution
Calculus Antiderivatives and Differential Equations
How to evaluate an indefinite integral using the method of substitution.
antidifferentiation method of substitution change of variables derivatives differential 
Simple Substitutions
Calculus Antiderivatives and Differential Equations
How to use the method of substitution to avoid common integration mistakes.
antidifferentiation method of substitution change of variables derivatives differential 
Navigation Problems
Precalculus Vectors and Parametric Equations
How we measure airspeed, wind, groundspeed, and other variables in navigation.
navigation airplane flight airspeed heading groundspeed course wind speed wind direction vector addition magnitude direction 
Scatterplots and Correlations
Algebra Introduction to Statistics
How to identify positive correlations, negative correlations, or no correlation between two variables.
scatterplot correlation trend line line of best fit 
Solving and Graphing Inequalities using Addition or Subtraction
Algebra Solving and Graphing Inequalities
How to solve and graph one variable inequalities using addition or subtraction.
inequality notation 
Solving and Graphing Inequalities using Multiplication or Division
Algebra Solving and Graphing Inequalities
How to solve and graph one variable inequalities using multiplication or division.
inequality notation solve 
Science Experiments
Biology Foundation of Biology
How to design a scientifically sound experiment.
experiment design control group sample size blind experiment variable 
Solving a Rational Equation for a parameter
Algebra 2 Rational Expressions and Functions
How to solve a simple rational equation for a parameter.
rational equation parameter variable lcd least common denominator 
Angle Bisectors
Geometry Geometry Building Blocks
How to label an angle bisector; how to use an angle bisector to find a missing variable.
congruent angles ray 
ACT Algebra
ACT ACT Math
Short, helpful video on ACT Algebra by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
Elementary algebra intermediate algebra substituting variables simplifying expressions solving linear equations