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Lilmike234

  • one year ago

which of the following graphs matches the circle defined by this equation (x-3)^2+(y+1)^2=25

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  1. UsukiDoll
    • one year ago
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    The center-radius form of the circle equation is in the format (x – h)^2 + (y – k)^2 = r^2, with the center being at the point (h, k) and the radius being "r".

  2. UsukiDoll
    • one year ago
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    we just need tiny bit of information to graph this...

  3. UsukiDoll
    • one year ago
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    \[ (x-3)^2+(y+1)^2=25 \] what is the square root of 25?

  4. lilmike234
    • one year ago
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    5

  5. lilmike234
    • one year ago
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    Here are the answer choices

  6. UsukiDoll
    • one year ago
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    ok, and what will our h and k be? hint: opposite signs for h,k . it's similar to solving for x and y

  7. lilmike234
    • one year ago
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    (-2,8) ?

  8. UsukiDoll
    • one year ago
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    where did that come from? O_O

  9. triciaal
    • one year ago
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    @Lilmike234 focus on the process the answer will come then you match with what you get

  10. lilmike234
    • one year ago
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    Im having a hard time finding the answer but I think it was answer choice B

  11. triciaal
    • one year ago
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    just like the other problem finding the value of a

  12. UsukiDoll
    • one year ago
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    no... that's not it. It's not B.

  13. UsukiDoll
    • one year ago
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    what is the center for the equation (x-3)^2+(y+1)^2=25 ?

  14. lilmike234
    • one year ago
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    (-3,1)=5

  15. UsukiDoll
    • one year ago
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    opposite signs for the center

  16. UsukiDoll
    • one year ago
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    x-3= 0 y+1 = 0 solve for x and y

  17. lilmike234
    • one year ago
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    x=3 y=-1

  18. UsukiDoll
    • one year ago
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    ok now center is (3,-1) and radius is 5

  19. lilmike234
    • one year ago
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    So my answer would be C right ?

  20. UsukiDoll
    • one year ago
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    |dw:1439082976874:dw| that's where our center point is

  21. triciaal
    • one year ago
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    correct

  22. UsukiDoll
    • one year ago
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    now to draw the circle.

  23. UsukiDoll
    • one year ago
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    |dw:1439083095302:dw| it's a bit inaccurate though.. x.x

  24. UsukiDoll
    • one year ago
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    |dw:1439083134396:dw|

  25. UsukiDoll
    • one year ago
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    but yes it's C C

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