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Math Help - equations of lines

  1. #16
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    Re: equations of lines

    thanks alot, we had 2 classes put together!

    so from my original question the first slope =2 so would the second =-1/2?
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  2. #17
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    Re: equations of lines

    Quote Originally Posted by andyboy179 View Post
    thanks alot, we had 2 classes put together!
    so from my original question the first slope =2 so would the second =-1/2?
    Geezzzzz YES Andy; WHY are you asking? Get more confidence in yourself...
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  3. #18
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    Re: equations of lines

    Quote Originally Posted by andyboy179 View Post
    thanks alot, we had 2 classes put together!

    so from my original question the first slope =2 so would the second =-1/2?
    Yes.

    So for the equation of the line you are trying to find, it is of the form y = mx + c, and you have now found m = -1/2, use this and the fact that (x, y) = (0, 0) is a point that lies on the line, to evaluate c.
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  4. #19
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    Re: equations of lines

    thanks, but what would i do next?
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  5. #20
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    Re: equations of lines

    Quote Originally Posted by andyboy179 View Post
    thanks, but what would i do next?
    You have an x value, a y value and an m value. Put them into y = mx + c and solve for c.
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  6. #21
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    Re: equations of lines

    Quote Originally Posted by andyboy179 View Post
    thanks, but what would i do next?
    Do your best !
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  7. #22
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    Re: equations of lines

    so would it be, y=2x+c to start with?
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  8. #23
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    Re: equations of lines

    I recommand you to read post 18 (of Prove it) again, this post tells everything you have to do.
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  9. #24
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    Re: equations of lines

    so it would be 0=-1/2+c
    +1/2 to each side so C=1/2?
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  10. #25
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    Re: equations of lines

    Andy, please stop posting your "guesses"; wastes everybody's time.
    You apparently still can't see that C = 0.
    Only a teacher in a classroom can help you.
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