Results 1 to 4 of 4

Math Help - sketch the graph

  1. #1
    Newbie
    Joined
    Sep 2006
    Posts
    2

    sketch the graph

    (x-2)^2+(y+3)^2=25
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by stephaniej View Post
    (x-2)^2+(y+3)^2=25
    This is a circle of radius 5 with centre at (2,-3)

    RonL
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor Quick's Avatar
    Joined
    May 2006
    From
    New England
    Posts
    1,024
    I have posted the graph below for you to see. (It may look like an oval, but it's a circle)

    Cap'nBlack (or anyone else), what is the trick to see where the center is, and the size of the radius? my best guess is that given an equation in the form: (x+a)^2+(y+b)^2=c the radius is \sqrt c and the center point is (-a,-b)
    Attached Thumbnails Attached Thumbnails sketch the graph-circle.jpg  
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Member Glaysher's Avatar
    Joined
    Aug 2006
    From
    Newton-le-Willows
    Posts
    224
    Quote Originally Posted by Quick View Post
    I have posted the graph below for you to see. (It may look like an oval, but it's a circle)

    Cap'nBlack (or anyone else), what is the trick to see where the center is, and the size of the radius? my best guess is that given an equation in the form: (x+a)^2+(y+b)^2=c the radius is \sqrt c and the center point is (-a,-b)
    That is correct
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Sketch the graph
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: February 26th 2011, 03:48 AM
  2. sketch the graph of f(x)
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: April 18th 2010, 04:23 AM
  3. please help sketch the graph
    Posted in the Calculus Forum
    Replies: 1
    Last Post: March 23rd 2010, 08:22 AM
  4. Sketch graph help
    Posted in the Algebra Forum
    Replies: 2
    Last Post: March 7th 2010, 06:27 PM
  5. Sketch the graph of P and Q
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: September 16th 2008, 07:55 PM

Search Tags


/mathhelpforum @mathhelpforum