Introduction to Linear Equations

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In this video, Mahalo math expert Allison Moffett gives you an introduction to linear equations.

What is a Linear Equation?
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A linear equation is a mathematical expression with an equal sign and two variables that can be represented by a line on a graph. An example of such an equation would be y=3x-4.
With these equations, both variables can change the number that they represent, but as one changes, the other must change according to the formula. In this case, x is the independent variable and y is the dependent variable.

Identifying Linear Equations
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In the example of y=3x-4, you know it is a linear equation because all the variables are only raised to the power of one. It isn't written out that way, but it's understood. If there were an x squared or x cubed, it wouldn't be a linear equation.

Graphing Linear Equations
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When you represent linear equations on a graph, the result will be a straight line that slants (or slopes) to either the right or left and intersects both axes at different points.

Read more by visiting our page at:
http://www.mahalo.com/introduction-to-linear-equations/

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[mnmurshed]

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[ThomasBHofSoCal]

Hey Allison, since we can say, "X changes as Y changes", can we also call Y the independent variable and call X the dependent variable?

[TheCalichic9]

very easy to understand:)