1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Circle equation

  1. Apr 19, 2005 #1
    how would you find the equation of a circle : (x-p)^2 + (y-q)^2=r^2 with this given info:

    the circle passes through A(2,2) and B(5,3) and its centre is on the line defined by y=X+1
  2. jcsd
  3. Apr 19, 2005 #2
    Plug the two points in the equation and then you get an equation with p and q which should look like 3p+2q=13.

    since the center is on the line y=x+1, and the center of the circle is supposed to be (p,q). So q=p+1.

    then solve for the equation.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook