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Excalibur0126

  • one year ago

Explain the distance formula. Then use it to calculate the distance between A(1,1) and B(7,-7).

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  1. marigirl
    • one year ago
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    You are basically trying to find the length of a line.|dw:1441416346289:dw|

  2. marigirl
    • one year ago
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    the same idea also applied to the y axis too

  3. marigirl
    • one year ago
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    |dw:1441416455284:dw|

  4. marigirl
    • one year ago
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    and finally we use pythagoras theorem (pythagoras formula to find that diagonal line)

  5. marigirl
    • one year ago
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    Shall we try now; distance between A(1,1) (x1,y1) and B(7,-7) (x2,y2)

  6. marigirl
    • one year ago
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  7. Excalibur0126
    • one year ago
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    So it would be 6^2+-8^2 which is -28. And it would be the square root of -28?

  8. marigirl
    • one year ago
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    6^2= 36 (-8)^2= 64

  9. marigirl
    • one year ago
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    make sure you use brackets if you are using your calculator :) now add them both up and dont forget to take the square root!

  10. Excalibur0126
    • one year ago
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    Okay, I think I get it now, thank you :)

  11. marigirl
    • one year ago
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    Try: (6)^2+(-8)^2

  12. marigirl
    • one year ago
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    glad i could help :)

  13. Excalibur0126
    • one year ago
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    36+64=100 and the square root of 100 is 10. So the third side would be 10.

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