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321drew123 Group Title

Alright, freshman accelerated honors geometry problem. I need ton of help. How do you find the distance between a point and a line? Ex: Line L contains points (11,-1) and (-3,-11). Point P has coordinates (-1,1). HELP.

  • 2 years ago
  • 2 years ago

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  1. Lukecrayonz Group Title
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    Ever consider you shouldn't be in accelerated honors geometry?

    • 2 years ago
  2. 321drew123 Group Title
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    No? This is actually the only topic we've covered that I don't understand. I feel like that was an insult...

    • 2 years ago
  3. estudier Group Title
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    Slope of line L gives you slope of perpendicular.....

    • 2 years ago
  4. yummydum Group Title
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    okay so you need to use the distance formula to find the distance between two points :) \[d=\sqrt {(y_2-y_1)+(x_2-x_1)}\]

    • 2 years ago
  5. cgreenwade2000 Group Title
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    estudier? What?

    • 2 years ago
  6. Lukecrayonz Group Title
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    Find midpoint between the two points on the given line, use distance formula to find the distance between the given point and the midpoint.

    • 2 years ago
  7. yummydum Group Title
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    so using that you would get \[L=\sqrt{(-11+1)+(-3-11)}\]

    • 2 years ago
  8. 321drew123 Group Title
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    All I know is that I need to find the point the coordinate is closest to on the line, then use the slope to find the length of the line its used to.

    • 2 years ago
  9. Lukecrayonz Group Title
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    No, Yummy, this is the correct way.

    • 2 years ago
  10. 321drew123 Group Title
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    yummydum, thats the distance from an endpoint to the point, not the line.

    • 2 years ago
  11. yummydum Group Title
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    okay well go with what sire crayon has to saay

    • 2 years ago
  12. Lukecrayonz Group Title
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    You're finding a farther distance than needed

    • 2 years ago
  13. yummydum Group Title
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    i was getting to that

    • 2 years ago
  14. 321drew123 Group Title
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    yeah

    • 2 years ago
  15. estudier Group Title
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    http://math.ucsd.edu/~wgarner/math4c/derivations/distance/distptline.htm

    • 2 years ago
  16. Lukecrayonz Group Title
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    http://screensnapr.com/v/14wXYK.jpg

    • 2 years ago
  17. Lukecrayonz Group Title
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    Explanation, answer is 8.6.

    • 2 years ago
  18. Lukecrayonz Group Title
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    @yummydum your distance was 12.17, much farther than the actual distance.

    • 2 years ago
  19. 321drew123 Group Title
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    estudier that is not how i remember us learning it in school, we learned a shorter way

    • 2 years ago
  20. estudier Group Title
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    It is short, they are just explaining everything in great detail.

    • 2 years ago
  21. yummydum Group Title
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    again...that wasnt my final answer i was getting to the point...but i see uve got this covered

    • 2 years ago
  22. Lukecrayonz Group Title
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    estudier that makes it look very confusing :P

    • 2 years ago
  23. 321drew123 Group Title
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    Ok i think i understand it now. Thanks Luke

    • 2 years ago
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