Coordinate Geometry of the Circle (Cambridge O Level Additional Maths)

Topic Questions

1a
Sme Calculator
5 marks

Solutions to this question by accurate drawing will not be accepted.
A circle has equation space x squared space plus space y squared space – space 16 x space – space 10 y space plus space 73 space equals space 0 space.

(i)
Find the coordinates of the centre of the circle and the length of the radius.

(ii)
Hence show that the point (10, 6.5) lies inside the circle.
1b
Sme Calculator
1 mark

A different circle has equation space left parenthesis x space – space 10 right parenthesis squared space plus space left parenthesis y space – space 6.5 right parenthesis squared space equals space 2.25 space.
Show that the two circles touch. You are not required to find the coordinates of the common point.

Did this page help you?

1a
Sme Calculator
2 marks

Construct the graph of space x squared space plus space y squared equals space 9

q2a-medium-2-18-equation-of-circle-edexcel-gcse-maths

1b
Sme Calculator
3 marks

By drawing the line x space plus space y space equals space 1 on the grid, solve the equations x squared space plus space y squared space equals space 9
x space plus space y space equals 1

Did this page help you?

2a
Sme Calculator
2 marks

On the grid, construct the graph of space x squared space plus space y squared space equals space 16

q3a-medium-2-18-equation-of-circle-edexcel-gcse-maths

2b
Sme Calculator
3 marks

Find estimates for the solutions of the simultaneous equations

table row cell x squared space plus space y squared space end cell equals cell space 16 end cell row cell y space end cell equals cell space 2 x space plus 1 end cell end table

Did this page help you?

1
Sme Calculator
8 marks

A circle has a centre left parenthesis 2 comma space – space 4 right parenthesis and radius 3.
The linespace y space equals space 2 x space – space 3 space intersects the circle at points A and B.
The perpendicular bisector of line A B intersects the circle at points X and Y.
Find the area of kite A X B Y.

Did this page help you?