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Linear relations help you figure out and predict real-world things, like how much your phone plan costs or the path a SpaceX rocket will take when it launches. Knowing about linear relationships is useful for things like managing money, understanding economics, and building stuff like bridges and buildings.
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Why All the Letters in Algebra? | What is a Variable? | Variables, Expressions & Equations
Testing Solutions to Equations | Representing a Relationship with an Equation | Dividing Both Side of an Equation
One-Step Equations Intuition | Describing Steps When Solving Equations | Two-Step Equation Word Problems
Why aren't we using the Multiplication Symbol?
Evaluating/Solving an Expression with One Variable | Evaluating/Solving an Expression with Two Variables
Evaluating Expressions with Two Variables: Fractions & Decimals | Combining Like Terms
Combining Like Terms: Negative Coefficients & Distribution | Combining Like Terms: Negative Coefficients
Distributive Property | Equations with Parentheses | Reasoning with Linear Equations
Graphing Linear Relationships
What is a Function? | Equations vs Functions | Linear Graphs Word Problems
Graphing a Linear Equation: y=2x + 7 | Dependent & Indepedent Variables
Dependent & Indepedent Variables: Graphing | Writing Equations for Relationships Between Quantities
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Introduction to Algebra | Balance when Adding & Subtracting | Introduction to Algebra - Multiplication
Order of Operations (BEDMAS) | Substitution | Equations and Formulas | Basic Algebra Definitions
Expanding (Removing Brackets) | Multiplying Negatives | Distributive Property
Equation of a Straight Line | The Straight Line Graph | Cartesian Coordinates (Ordered Pairs)
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Equality Explorer: Basics
Equality Explorer
Equality Explorer: Two Variables
Function Builder
Expression Exchange
Function Builder: Basics
Graphing Lines