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Most linear equations are functions, except for in the case of vertical lines.
It's best to remember that equations and functions represent two different things. An equation shows that two expressions are equal to each other. A function is a relations between two or more variables.

Linear equation - Wikipedia

en.wikipedia.org/wiki/Linear_equation

A linear equation is an algebraic equation in which each term is either a constant or the product ... The constants may be numbers, parameters, or even non-linear functions of parameters, and the .....

SOLUTION: Are all linear equations functions? Is there an instance ...

www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.369064.html

Equations of the form x=a are not functions. Those are vertical lines and fail the vertical line test. But all linear equations of the form y=mx%2Bb are functions.

SOLUTION: Are all linear equations functions? Is there an instance ...

www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.469195.html

The only linear equations that are not functions are equations of vertical lines. They have equations of the form x = a. such as x = 4 or x = -6 etc. All other linear ...

SOLUTION: Are all linear equation functions? Is there an instance ...

www.algebra.com/algebra/homework/coordinate/Linear-systems.faq.question.134930.html

Algebra -> Coordinate Systems and Linear Equations -> SOLUTION: Are all linear ... Use the "vertical line" rule to help decide if an expression is a function.

What similarities and differences do you see between functions and ...

www.quora.com/What-similarities-and-differences-do-you-see-between-functions-and-linear-equations-Are-all-linear-equations-functions-Is-there-an-instance-when-a-linear-equation-is-not-a-function

A function is a different kind of thing than an equation. An equation says that two things are ... Are all linear equations functions? Is there an instance when a ...

Functions Linear Functions and Equations - Shmoop

www.shmoop.com/functions/linear-functions-equations.html

A linear function is a function whose graph is a straight line. ... While all linear equations produce straight lines when graphed, not all linear equations produce  ...

Functions and linear equations (Algebra 2, How to graph functions ...

www.mathplanet.com/education/algebra-2/how-to-graph-functions-and-linear-equations/functions-and-linear-equations

A function is an equation that has only one answer for y for every x. ... If two linear equations are given the same slope it means that they are ... All courses.

Linear Equations - Math is Fun

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

A linear equation is an equation for a straight line. These are all linear equations: ... Sometimes a linear equation is written as a function, with f(x) instead of y: ...

Linear equations and functions | 8th grade (U.S.) | Khan Academy

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 ... These tutorials introduce you to linear relationships, their graphs, and functions .