# change of variables   14 videos

• #### Defining Variables

##### AlgebraPre-Algebra

How to write variables to describe numbers.

variable
• #### Percent Change

##### AlgebraSolving Equations

How to calculate a percent change.

percent percent change
• #### Solving Equations with a Variable on Both Sides

##### AlgebraSolving Equations

How to solve equations with the same variable on both sides.

expressions equations solutions implying like terms combining like terms distributive property
• #### Absolute Value Inequality Graphs in Two Variables

##### AlgebraAbsolute Value

How to solve and graph absolute value inequalities with x and y.

inequality absolute value graphing inequalities with two variables
• #### Absolute Value Inequalities

##### AlgebraAbsolute Value

How to solve and graph absolute value inequalities with one variable.

inequality absolute value graphing inequalities with one variable
• #### Graphing 2 Variable Inequalities

##### AlgebraSolving and Graphing Inequalities

How to graph inequalities in the xy plane.

inequality y = mx+b Cartesian Coordinate plane shading
• #### Definition of Slope

##### AlgebraLinear Equations and Their Graphs

How to understand the idea of slope.

slope change ratio fraction
• #### Solving Single-step Equations

##### AlgebraSolving Equations

How to solve single step equations with one variable.

expressions equations solutions2
• #### Direct Variation

##### AlgebraLinear Equations and Their Graphs

How to tell if two variables vary directly.

direct variation y intercept constant of variation
• #### Inverse Variation

##### AlgebraLinear Equations and Their Graphs

How to tell if two variables vary inversely.

inverse variation constant of variation product rule for inverse variation
• #### Finding the Slope of a Line from a Graph

##### AlgebraLinear Equations and Their Graphs

How to find the slope of a line if given a graph.

slope change ratio fraction slope triangle
• #### Scatterplots and Correlations

##### AlgebraIntroduction 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

##### AlgebraSolving 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

##### AlgebraSolving and Graphing Inequalities

How to solve and graph one variable inequalities using multiplication or division.

inequality notation solve