7.2 Introduction to linear equations
Introduction to linear equations
This is a lesson that teaches how to determine if an expression is a linear equation; and how to graph a linear equation.
Lessons
Notes:
Expression: A collection of numbers, variables, and signs, such as $3, 3x+4, 5 x^2 + 2, \sqrt{x3},$etc
Equations: A mathematical statement with an equal sign, such as $y = 2, y = 3x2, y = x, x = 3,$etc
Linear Equation: Ax + By = C (A, B & C are constants; x & y are variables)
All linear equations are functions expect a vertical line such as x = 3.

2.
Graph the linear equations: