Study

Circles

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  • What is the equation of this circle?
    (x+4)^2+(y-1)^2=9
  • What is the centre and radius of this circle?
    (-5;0) r=5
  • What is equation of this circle?
    (x-1)^2+y^2=16
  • What is the distance of these points? What is vector OP?
    d=sqrt113, vector: (7;8)
  • Is this point on the circle line?
    yes
  • What is the centre and radius of this circle?
    (6;-2) r=6/5
  • What are the coordinates of the vertex of this parabola?
    (-2;-5)
  • What is the centre and radius of this circle?
    (-2;-1) r=sqrt(5)
  • What is the equation of this circle?
    x^2+y^2=1
  • What are the coordinates of the vertex of this parabola?
    (3;1)
  • What is the equation of this circle?
    (x+3)^2+(y+2)^2=16
  • What is the equation of this circle?
    (x-1)^2+(y+3)^2=16
  • What is the distance of these points? Give vector OP.
    5, vector: (4;3)
  • What is the centre and radius of this circle?
    (6;-10) r=sqrt136
  • Is this point on the circle line?
    No
  • What is the magnitude of this vector?
    sqrt80
  • Is this point on the circle line?
    No
  • Is this point on the circle line?
    yes
  • What is the equation of this circle?
    x^2+y^2=16
  • What is the centre and radius of this circle?
    not a circle
  • What is the centre and radius of this circle?
    (-3;0) r=7
  • What is the centre and radius of this circle?
    (-1;5) r=6
  • What is the centre and radius of this circle?
    (-10;2) r=7