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Mitchi35

  • one year ago

3) Graph the circle x2+ (y + 2)2= 9. Label the center and at least four points on the circle.

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  1. Mitchi35
    • one year ago
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    Number 3 please? Thanks!

  2. Loser66
    • one year ago
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    what is the standard form of a circle?

  3. Mitchi35
    • one year ago
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    (x-h)^2+(y-v)^2=r2

  4. Loser66
    • one year ago
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    now compare to your expression, \(x^2 +(y+2)^2=9\) , then h =? k =? r =?

  5. Mitchi35
    • one year ago
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    Okay....Wait. But How can I figure out the center points?

  6. Loser66
    • one year ago
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    Why don't you answer me?:

  7. Mitchi35
    • one year ago
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    Well geez. Alright.

  8. Mitchi35
    • one year ago
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    I don't even understand what you are asking me to do.

  9. Loser66
    • one year ago
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    Since you skip it, you don't know how to find the center. I realize that fact right after you ask me what is the center although you said ok before.

  10. Mitchi35
    • one year ago
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    Not with this question no.

  11. Loser66
    • one year ago
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    ok, slower. Do you agree with me that \(x^2 = (x-0)^2\)?

  12. Mitchi35
    • one year ago
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    Yeah I guess

  13. Mitchi35
    • one year ago
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    Yes I do.

  14. Loser66
    • one year ago
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    and \((y +2) = y-(-2) \) , ok?

  15. Mitchi35
    • one year ago
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    Yes

  16. Loser66
    • one year ago
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    9 = 3^2 ok?

  17. Mitchi35
    • one year ago
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    Ok

  18. Loser66
    • one year ago
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    Compare the standard form of a circle with your problem: \[(x -\color{red}{h})^2 +(y -\color{blue}{k})^2 =\color{purple}{r}^2\\(x -\color{red}{0})^2 +(y -\color{blue}{(-2)})^2 =\color{purple}{3}^2\] Can you tell me h, k,r on your problem are?

  19. Mitchi35
    • one year ago
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    Oh! Omg! Nevermind! I have it figured out. It's right here in my book. I had to dig to find it. But thank you! Do you want me to share it with you anyway?

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