Hi,
I have this problem:
If 'R' is the fixed point (3,2) and 'P' is the movable point (x,y)
Find the equation of the locus of 'P' if distance PR is twice the distance from P to y=-1
Thanks!
Hello, withyou!
Did you make a sketch?
Exactly where is your difficulty?
is the fixed point (3,2), and is the movable point (x,y)
Find the equation of the locus of
if distance is twice the distance from toCode:| | P | o (x,y) | * : | * : | * : | R o : | (3,2) : ----+-----------------:------ | :Q - + - - - - - - - - o - - | (x,-1) |
We have: .
Square both sides: .
Expand: .
. . . . . . .
Complete the square:
. .
. .
. . . . . . . .
Divide by -12: .