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Homework Help: Finding equation of a line

  1. Oct 17, 2006 #1
    Hello,
    I can't understand 2 questions from my math homework can you please explain how I am supposed to do that?

    1. Find the equations of the medians of the triangle with vertex coordinates at J(2,-2) K(4,-1) and L(-2,-5).

    2. Find the equation of the perpendicular bisector of a chord of a circle, given that the end points of the chord are C(-2,0) and D(4,-4).

    Thanks a lot!
     
  2. jcsd
  3. Oct 17, 2006 #2
    Try drawing a diagram (with axes on it already).
     
  4. Oct 17, 2006 #3
    It's supposed to be an equation - y=mx+b
    Thanks
     
  5. Oct 17, 2006 #4

    HallsofIvy

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    Science Advisor

    What is the definition of vertex?
    (If (a,b) and (c,d) are the endpoints of a line segment, the midpoint is at
    ((a+c)/2, (b+d)/2).)

    perpendicular bisector of any line segment passes through the midpoint.
    Also, it slope is -1/m where m is the slope of the first line segment.
     
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