UK Secondary (7-11)
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Circles at Origin

Interactive practice questions

How many points lie on the graph of $x^2+y^2=0$x2+y2=0?

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How many points lie on the graph of $x^2+y^2=-81$x2+y2=81?

State the equation of the circle.

A circle has its centre at the origin and a radius of $4$4 units.

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