Leaving Cert Coordinate Geometry of the Circle Set A Questions - L.C. Maths

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Start with the quiz…

Knowledge Check Quiz

EXAMS.IE

Coordinate Geometry

Hint

A circle with equation \(x^2+y^2=r^2\) is centred at the origin.

1 / 5

The circle \(x^2+y^2=4\) is centred at the origin.

True

False

A circle with equation \(x^2+y^2=r^2\) is centred at the origin.

That's right!

A circle with equation \(x^2+y^2=r^2\) is centred at the origin.

Hint

A circle with equation \(x^2+y^2=r^2\) has a radius \(r\).

2 / 5

The circle \(x^2+y^2=4\) has a radius of \(4\) units.

True

False

A circle with equation \(x^2+y^2=r^2\) has a radius \(r\).

That's right!

A circle with equation \(x^2+y^2=r^2\) has a radius \(r\).

Hint

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a centre \((h,k)\).

3 / 5

The circle \((x+2)^2+(y+1)^2=4\) has a centre \((2,1)\).

True

False

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a centre \((h,k)\).

That's right!

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a centre \((h,k)\).

Hint

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a radius \(r\).

4 / 5

The circle \((x+2)^2+(y+1)^2=4\) has a radius of \(4\).

True

False

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a radius \(r\).

That's right!

A circle with equation \((x-h)^2+(y-k)^2=r^2\) has a radius \(r\).

Hint

The centre of this circle is \((0,-1)\).

5 / 5

The circle \(x^2+(y+1)^2=4\) has a centre located on the \(x\) axis.

True

False

The centre of this circle is \((0,-1)\).

That's right!

The centre of this circle is \((0,-1)\).

Your score is

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