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Homework Help: Circles and curves

  1. Aug 3, 2009 #1
    1. A curve is traced by a point P(x,y) which moves such that its distance from the point A(-1,1) is three times its distance from the point B(2,-1). Determine the equation of the curve.

    A circle is tangent to the y - axis at y = 3 and has one x - intercept at x = 1.
    a. Determine the other x- intercept.
    b. Find the equation of the circle.

    2. none that i know of

    3. I can't seem to find out how to solve these problems. Is there like a formula that I have to follow? Please explain how to do these problems.
  2. jcsd
  3. Aug 3, 2009 #2


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    Homework Helper
    Education Advisor
    Gold Member

    Use the distance formula and translate this,
    directly into algebraic numeral expressions and equation.
  4. Sep 4, 2009 #3
    Thank You!
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