phase change   3 videos

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  Percent Change

  Algebra Solving Equations

  How to calculate a percent change.

  percent percent change
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  Definition of Slope

  Algebra Linear Equations and Their Graphs

  How to understand the idea of slope.

  slope change ratio fraction
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  Finding the Slope of a Line from a Graph

  Algebra Linear Equations and Their Graphs

  How to find the slope of a line if given a graph.

  slope change ratio fraction slope triangle