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    a circle passes through the points 0,-3 and 0,3 and has radius 5. draw a sketch of the 2 possible positions of the circles and find their equations.

    I don't know where to start, I am confused on the how to draw the 2 positions and how the radius is 5.
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    Go on wolfram alpha!
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    For your confusions on the radius being 5 - the two points (0,-3) and (0,3) are not the diameter.

    If you draw a sketch of the graph, and mark on the two points, try and see how you could draw two circles.
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    (Original post by Vorsah)
    a circle passes through the points 0,-3 and 0,3 and has radius 5. draw a sketch of the 2 possible positions of the circles and find their equations.

    I don't know where to start, I am confused on the how to draw the 2 positions and how the radius is 5.
    You know that the equation of a circle is (x-a)^2 + (y-b)^2 =r^2

    You know r and two values of x and y and this will allow you to find the possible values of a and b.
 
 
 
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