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Slope of a Line
Graphs
Slope-Intercept Form
Point-Slope Form
Parallel Lines
Perpendicular Lines
Practice Problems
  SLOPE OF A LINE
Did you ever wonder why skiers use the phrase ski slopes? A definition of slope is the change in the vertical distance (rise) divided by the change in the horizontal distance (run). If you are a beginner skier and you are being pulled up by the rope tow to the top of the ski slope, the slope is positive.
Positive slope
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