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For more information, please see full course syllabus of Algebra 1
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Lecture Comments (1)

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Post by Raymond Hayden on June 8, 2011

very helpful

Slope and Rate of Change

  • The slope of a straight line is the ratio of the change in the y coordinates to the change in the x coordinates of two particular points that lie on the line. This is also known as a rate of change.

  • Slope is a measurement of how steep the line is. The larger the absolute value of the slope, the steeper the line.

  • Any two points on a line can be used to compute the slope. The same value will be obtained, no matter which two points are chosen.

  • The slope can be positive, negative, 0, or undefined.

  • A horizontal line has slope 0. A vertical line has undefined slope.

  • If a line increases as it moves from left to right, its slope is positive. If it decreases, its slope is negative.

Slope and Rate of Change

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Rate of Change 0:27
    • Independent Variable
    • Dependent Variable
  • Slope 2:02
    • Example
    • Steepness of the Line
  • Possible Slopes 5:58
    • Positive
    • Negative
    • Zero
    • Undefined
  • Lecture Example 1 8:03
  • Lecture Example 2 10:34
  • Additional Example 3
  • Additional Example 4