solving a system in three variables 175 videos

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 
Introduction to Planes
Precalculus Vectors and Parametric Equations
How to write an equation for the coordinate planes or any plane that is parallel to one.
coordinate axes coordinate planes octants the first octant planes three dimensions 
Constructing Parallel Lines
Geometry Constructions
How to construct parallel lines using three different methods.
transversal duplicating angles corresponding alternate interior alternate exterior 
Simplifying Determinants
Precalculus Systems of Linear Equations and Matrices
How to simplify determinants using three row (or column) operations.
determinant row operations column operations interchanging rows common factors adding a multiple of one row to another 
Proportions
Algebra Solving Equations
How to solve proportions.
ratio proportion fraction cross multiply 
Set Operation: Intersection
Precalculus Linear Equations and Inequalities
How to solve define intersection.
Venn diagram union set operation and 
Thermochemical Equation
Chemistry Thermochemistry
Understanding and solving thermochemical equations.
thermochemical equations 
Set Operation: Intersection
Algebra 2 Linear Inequalities
How to solve define intersection.
Venn diagram union set operation and 
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 
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 
Science Experiments
Biology Foundation of Biology
How to design a scientifically sound experiment.
experiment design control group sample size blind experiment variable 
Linear Inequalities
Algebra Solving and Graphing Inequalities
How to notate solving and graphing inequalities.
inequality notation 
Absolute Value Equations
Algebra Absolute Value
How to solve equations with absolute values.
absolute value solutions 

Differential Equations
Calculus Antiderivatives and Differential Equations
How to solve simple differential equations.
differential equations derivatives