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NY,NY

  • 3 years ago

M= Rise/ Run so if the slope is -2, the rise will be -2 and the run will be 1. Is the run positive or negative? I'm going to use this slope of an equation to graph and i want to know which direction the line will go.

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  1. theEric
    • 3 years ago
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    Well, just algebraically you can see\[-2=-\frac{2}{1}=\frac{-2}{1}=\frac{2}{-1}\]

  2. theEric
    • 3 years ago
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    So if you have a negative rise (look at the third expression for an example) \[(\frac{-2}{1})\] then you have a positive 1 as your run.

  3. NY,NY
    • 3 years ago
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    oh, so if the rise is a whole number and it is negative, the run will be positive

  4. theEric
    • 3 years ago
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    As long as you let your rise be negative! :) You can actually work it out both ways, as long as just one of rise or run is negative. Look at -2/1. Then you go down 2, and right 1. Look at 2/-1. Then you go up 2, and left 1. It's just because they're opposite! -2 from 2, and 1 from -1, I mean.

  5. NY,NY
    • 3 years ago
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    yeah I get it :)

  6. NY,NY
    • 3 years ago
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    oh wait, say the slope is -2/3 then is the rise is negative and the run positive?

  7. theEric
    • 3 years ago
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    |dw:1349127841419:dw|

  8. NY,NY
    • 3 years ago
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    yeah, that's how I graphed mine. Thanks for that :D

  9. theEric
    • 3 years ago
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    |dw:1349127864880:dw| I started drawing the picture, so I decided to finish. I'm glad you've got it! Thank you!

  10. NY,NY
    • 3 years ago
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    thank me? thank you! :D you're very helpful.

  11. theEric
    • 3 years ago
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    Haha, I'm glad I could be of service :) Take care! Good luck, too!

  12. theEric
    • 3 years ago
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    And thank you :)

  13. NY,NY
    • 3 years ago
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    sure :D

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