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anonymous

  • one year ago

The distance between A (-4, 2) and B(4, 2) is.

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  1. mathstudent55
    • one year ago
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    Did you try graphing the points?

  2. mathstudent55
    • one year ago
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    There is a distance formula to find the distance between any two points on the coordinate plane, but if the points are on a horizontal line or on a vertical line, you don't need to use the formula, and you can still find the distance easily.

  3. anonymous
    • one year ago
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    yeah i tried it and i got 64 then i tried breaking it down and i dont know how to get the answer. i get to choose from 4, 6 , and 8

  4. mathstudent55
    • one year ago
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    Just graph it as I suggested above.

  5. pooja195
    • one year ago
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    \[\huge~\rm~\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\] did you use this?

  6. anonymous
    • one year ago
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    yes

  7. mathstudent55
    • one year ago
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    |dw:1437619162121:dw|

  8. anonymous
    • one year ago
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    even if i graph it i dont know what im doing

  9. mathstudent55
    • one year ago
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    See? The points are on a horizontal line, so the distance is simply the distance along the horizontal line the points lie in.

  10. pooja195
    • one year ago
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    list your: x1=? x2=? y1=? y2=?

  11. mathstudent55
    • one year ago
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    |dw:1437619236726:dw|

  12. mathstudent55
    • one year ago
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    How far is it from -4 to 4 on the number line?

  13. anonymous
    • one year ago
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    so is it 8

  14. mathstudent55
    • one year ago
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    Correct.

  15. mathstudent55
    • one year ago
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    @pooja195 wrote the distance formula. If the points do not lie on a horizontal or vertical line, you need to use it. If the points do lie on a horizontal or vertical line, you can still use it, but my way above is shorter.

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