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!

Homework Help: Centre of a circle

  1. Sep 30, 2010 #1
    1. The problem statement, all variables and given/known data
    Find the centre of the circle which passes through the points (1,-2) and (4,-3) whose centre lies on the line 3x + 4y = 7

    2. Relevant equations

    3. The attempt at a solution

    distance from the centre of the circle to the given points is equal
    by distance formula and simplifying,
    I got 3x-2y=10

    On Solving 3x + 4y= 7 and 3x - 2y= 10
    I got the point (3,-1/2) as the centre of the circle.
    But answer is something else.
    Please help
  2. jcsd
  3. Sep 30, 2010 #2
    I get as a second equation
    [tex] 3x -y=10[/tex]
  4. Sep 30, 2010 #3
    Damn! such a silly mistake
    Thanks mate.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook