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Understanding Line Slope: Positive, Negative, Undefined, and Zero

This lesson focuses on determining the slope of various lines, including positive, negative, undefined, and zero slopes. Students will learn to identify the slope of a line by calculating rise over run, using given points, and examining vertical and horizontal lines. The session includes practical exercises, such as finding the slope from equations written in the y-intercept form. Expect to engage in exercises that consolidate the knowledge of slope calculation through silent reading and practice worksheets to enhance comprehension.

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Understanding Line Slope: Positive, Negative, Undefined, and Zero

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  1. Slope Day 2

  2. Remember… Zero Negative Positive Undefined or No Slope

  3. Find the slope of the following line. The slope is… • 3 • 2

  4. Determine the slope of the line. Start with the lower point and count how much you rise and run to get to the other point! rise 3 = = run 6 6 3 Notice the slope is positive AND the line increases!

  5. What is the slope of a vertical line? The line doesn’t run! All vertical lines have an undefined slope.

  6. Determine the slope of the line. Find points on the graph. Use two of them and apply rise over run. -2 1 The line is decreasing (slope is negative).

  7. What is the slope of a horizontal line? The line doesn’t rise! All horizontal lines have a slope of 0.

  8. rise = 4 m= rise run run = 5 m= 4/5

  9. You try: Put in y intercept form (function form) 3x + 5y = 10 5y = -3x + 10 y = -3/5 x + 2 y intercept = 2 slope= -3/5

  10. Skills Check! When you finish turn your paper over and put it in the corner of your desk. Silent read, work on other homework or practice more problems. No talking. Practice: Worksheet

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