parallel sides   3 videos

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  Parallel and Perpendicular Lines

  Algebra Linear Equations and Their Graphs

  How to determine whether lines are parallel, perpendicular, or neither.

  parallel perpendicular point slope form intersect right angle
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  Solving Equations with a Variable on Both Sides

  Algebra Solving Equations

  How to solve equations with the same variable on both sides.

  expressions equations solutions implying like terms combining like terms distributive property
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  Inconsistent and Dependent Systems of Equations

  Algebra Solving Systems of Equations

  How to identify a system of equations that is inconsistent or dependent.

  system of equations solution parallel dependent inconsistent