Homework Help: Math (repost, URGENT)

Posted by Anonymous on Tuesday, February 9, 2010 at 11:19am.

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 the distance from the point B(2,-1). Find the equation of the curve and identity.

Math (repost, URGENT) - bobpursley, Tuesday, February 9, 2010 at 11:43am
distancePB=3distancePA
sqrt((x-2)^2+(y+1)^2)=3sqrt((x+1)^2 +(y-1)^2)

square both sides, expand the polynomial, collect terms, and you ahve the equation.

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