# Introduction to linear equations

##### Intros

##### Examples

###### Lessons

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###### Topic Notes

This is a lesson that teaches how to determine if an expression is a linear equation; and how to graph a linear equation.

Expression: A collection of numbers, variables, and signs, such as $3, 3x+4, 5 x^2 + 2, \sqrt{x-3},$etc

Equations: A mathematical statement with an equal sign, such as $y = 2, y = 3x-2, y = x, x = 3,$etc

Linear Equation: Ax + By = C (A, B & C are constants; x & y are variables)

All linear equations are functions except a vertical line such as x = 3.

Equations: A mathematical statement with an equal sign, such as $y = 2, y = 3x-2, y = x, x = 3,$etc

Linear Equation: Ax + By = C (A, B & C are constants; x & y are variables)

All linear equations are functions except a vertical line such as x = 3.

###### Basic Concepts

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practice questions

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