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    How to do question B(ii)
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    You're solving the equation of the circle when x=0 and y=p. This will form a quadratic equation in p that you can solve.
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    (Original post by Aksa09)
    How to do question B(ii)
    This seems to be a recurring theme - when you're given two points and the equation and you don't know what else to do... plug them into the equation!
 
 
 
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