Results 1 to 3 of 3

Math Help - Graphing a circle

  1. #1
    Senior Member
    Joined
    Apr 2010
    Posts
    487

    Graphing a circle

    The question:
    x^2 + y^2 = \frac{-(10x + 8)}{3}

    How would I go about writing this in a form which could find me the centre point and radius? Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    10,969
    Thanks
    1011
    \displaystyle x^2 + y^2 = \frac{-(10x + 8)}{3}

    \displaystyle x^2 + y^2 = -\frac{10}{3}x - \frac{8}{3}

    \displaystyle x^2 + \frac{10}{3}x + y^2 = -\frac{8}{3}.

    Now complete the square on the \displaystyle x terms.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Apr 2010
    Posts
    487
    Thanks. It's times like these that I wish I had paid attention in high school.

    Better late than never, I guess!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. graphing unit circle on calculator
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: February 18th 2011, 12:46 PM
  2. Graphing Circle in Ti-83
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 18th 2010, 05:08 PM
  3. graphing a circle
    Posted in the Pre-Calculus Forum
    Replies: 9
    Last Post: September 1st 2009, 04:58 PM
  4. Graphing a circle
    Posted in the Algebra Forum
    Replies: 9
    Last Post: February 26th 2009, 04:11 AM
  5. Graphing a circle
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: February 1st 2009, 09:06 PM

Search Tags


/mathhelpforum @mathhelpforum