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Chapter 2.3

Chapter 2.3. Slope. Warm – Up!. Put the following equation in standard form. ½ x = 3y - 8 Find the X and Y intercepts and graph. 4Y- 2y = 6. Use slope to graph a line:. Find the slope of the line that passes through (0, 0) and (–5, 6). Then graph the line. Positive Slope:.

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Chapter 2.3

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  1. Chapter 2.3 Slope

  2. Warm – Up! • Put the following equation in standard form. ½ x = 3y - 8 • Find the X and Y intercepts and graph. 4Y- 2y = 6

  3. Use slope to graph a line: • Find the slope of the line that passes through (0, 0) and (–5, 6). Then graph the line.

  4. Positive Slope: When the slope shows as 3/1 then the rise is positive or up and the run is to the right. Therefore the slope goes upward from left to right.

  5. Negative Slope: When the slope is -4/1 then the rise is negative and going down and the run is to the right. Therefore the line goes downward from left to right.

  6. Zero Slope: When there is no x value in the equation, then there is no slope. Notice that there is no rise, but there is run. Therefore, there is a zero divided by a number. M = 0/#

  7. Undefined Slope: In this case there is rise, but no run, therefore the number is divided by zero and cannot be done, so it is undefinable. #/0 = m

  8. Parallel and Perpendicular Lines: Parallel Lines have the same slope Perpendicular Lines have opposite reciprocal slopes

  9. Tonight’s Homework: Page 72/73 (15-21 odd) (31-35 odd) (43-47 odd) Quiz Next Class (2.1 – 2.3)

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