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Math Help - Slope

  1. #1
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    Exclamation Slope

    Okay, so I am doing this tutorial for Econ but for some reason I cannot figure out the correct answer for slope. How know that to calculate slope it is rise over run but when I used that, I dont get the correct answer. Here is the problem:

    Slope-screen-shot-2013-08-28-11.11.51-am.png

    and then here is the answer choices for the first question:

    Slope-screen-shot-2013-08-28-11.14.13-am.png

    So, does anyone have any idea on how to solve this? If I followed rise over run the slope for A - B would be 1 right..? So why isn't an answer choice 1? I am so confused.. lol.
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  2. #2
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    Re: Slope

    For the orange line the y coordinate increases by 90-70=20 and the x coordinate increases by 12-8=4 so the slope is 20/4=5
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  3. #3
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    Re: Slope

    Quote Originally Posted by Shakarri View Post
    For the orange line the y coordinate increases by 90-70=20 and the x coordinate increases by 12-8=4 so the slope is 20/4=5
    Oh! Right that makes sense. So then the slope of the other line would be 10. I think I was just over thinking it. So then would it be 5 hours of sunlight per degree or 5 degrees per hour of sunlight?
    Last edited by michellederz; August 28th 2013 at 11:50 AM.
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