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Course Content
Algebra 1
0/14
Algebra 2
0/16
Trigonometry 1
0/18
Coordinate Geometry of the Line
0/14
Probability 1
0/14
Geometry 1
0/6
Differential Calculus
0/10
Trigonometry 2
0/10
Sequences & Series
0/12
Statistics 1
0/9
Coordinate Geometry of the Circle
0/14
Algebra 3
0/16
Complex Numbers
0/12
Geometry 2
0/4
Integration
0/8
Differential Calculus Applications
0/8
Financial Maths
0/8
Length, Area & Volume
0/6
Probability 2
0/9
Functions
0/15
Statistics 2
0/4
Inferential Statistics
0/6
Digital Lessons

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.

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.

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 $$(2,1)$$.

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 $$4$$.

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.