en.wikipedia.org/wiki/Linear_equation

A **linear equation** is an algebraic equation in which each term is either a constant
or the product of a constant and (the first power of) a single variable A simple ...

www.mathsisfun.com/algebra/linear-equations.html

Example: y = 2x + 1 is a **linear equation**: line on a graph. The graph of y = 2x+1 is
a straight line. When x increases, y increases twice as fast, so we need 2x ...

www.khanacademy.org/math/algebra-home/alg-basic-eq-ineq/alg-old-school-equations/v/algebra-linear-equations-1

Welcome to level one **linear equations**. So let's start doing some problems. So
let's say I had the equation 5-- a big fat 5, 5x equals 20. So at first this might look
a ...

www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions

**Linear equations** like y = 2x + 7 are called "linear" because they make a straight
line when we graph them. These tutorials introduce you to linear relationships, ...

www.khanacademy.org/math/algebra/two-var-linear-equations

Learn about **linear equations** that contain two variables, and how these can be
represented by graphical lines and tables of values.

www.khanacademy.org/math/algebra-home/alg-basic-eq-ineq/alg-old-school-equations/v/algebra-linear-equations-2

Norma Jean, Good question. They are called **linear equations** because when you
put the solutions to the equation on a x-y graph, the solutions always form a ...

www.khanacademy.org/math/algebra/two-var-linear-equations/forms-of-two-var-linear-equations/e/writing-the-equation-of-a-line-in-any-form

You've had practice with a few different forms of **linear equations**. Now use your
skills.

tutorial.math.lamar.edu/Classes/Alg/SolveLinearEqns.aspx

where a and b are real numbers and x is a variable. This form is sometimes
called the standard form of a **linear equation**. Note that most **linear equations** will
not ...

www.khanacademy.org/math/algebra-home/alg-basic-eq-ineq/alg-old-school-equations/v/algebra-linear-equations-4

Solving **linear equations** with variable expressions in the denominators of
fractions.