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- 1. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x - a)2 + (y - b)2 = r2 ?Centre (a,b)
Radius = r2 unitsCentre (-a,-b)
Radius = r unitsCentre (a,b)
Radius = r unitsCentre (-a,-b)
Radius = r2 units - 2. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x - 1)2 + (y - 2)2 = 32 ?Centre (-1,-2)
Radius = 3 unitsCentre (1,2)
Radius = 3 unitsCentre (-1,-2)
Radius = 9 unitsCentre (1,2)
Radius = 9 units - 3. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x - 4)2 + (y - 3)2 = 25 ?Centre (4,3)
Radius = 5 unitsCentre (4,3)
Radius = 25 unitsCentre (-4,-3)
Radius = 25 unitsCentre (-4,-3)
Radius = 5 units - 4. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x + 3)2 + (y + 1)2 = 22 ?Centre (-3,-1)
Radius = 4 unitsCentre (3,1)
Radius = 2 unitsCentre (-3,-1)
Radius = 2 unitsCentre (3,1)
Radius = 4 units - 5. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x + 2)2 + (y + 5)2 = 16 ?Centre (2,5)
Radius = 16 unitsCentre (2,5)
Radius = 4 unitsCentre (-2,-5)
r = 16 unitsCentre (-2,-5)
Radius = 4 units - 6. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x - 5)2 + (y + 3)2 = 36 ?Centre (5,-3)
Radius = 6 unitsCentre (-5,3)
Radius = 6 unitsCentre (-5,3)
Radius = 36 unitsCentre (5,-3)
Radius = 36 units - 7. Multiple ChoiceWhat is the coordinates of the centre and the radius of the circle with equation:
(x + 7)2 + (y - 6)2 = 64 ?Centre (7,-6)
Radius = 8 unitsCentre (-7,6)
Radius = 64 unitsCentre (-7,6)
Radius = 8 unitsCentre (7,-6)
Radius = 64 units - 8. Multiple ChoiceWhat is the equation of the circle, with centre (a,b) and radius r units?(x - a)2 + (y - b)2 = r2 (x + a)2 + (y + b)2 = r(x - a)2 + (y - b)2 = r(x + a)2 + (y + b)2 = r2
- 9. Multiple ChoiceWhat is the equation of the circle, with centre (4,2) and radius 5 units?(x + 4)2 + (y + 2)2 = 25(x + 4)2 + (y + 2)2 = 5(x - 4)2 + (y - 2)2 = 5(x - 4)2 + (y - 2)2 = 25
- 10. Multiple ChoiceWhat is the equation of the circle, with centre (3,8) and radius 4 units?(x - 3)2 + (y - 8)2 = 4(x - 3)2 + (y - 8)2 = 16(x + 3)2 + (y + 8)2 = 16(x + 3)2 + (y + 8)2 = 4
- 11. Multiple ChoiceWhat is the equation of the circle, with centre (-2,-7) and radius 3 units?(x + 2)2 + (y + 7)2 = 3(x - 2)2 + (y - 7)2 = 9(x + 2)2 + (y + 7)2 = 9(x - 2)2 + (y - 7)2 = 3
- 12. Multiple Choice
What is the equation of the circle, with center (-6,-9) and radius 7 units?
(x + 6)2 + (y + 9)2 = 49
(x + 6)2 + (y + 9)2 = 7
(x - 6)2 + (y - 9)2 = 49
(x - 6)2 + (y - 9)2 = 7
- 13. Multiple ChoiceWhat is the equation of the circle, with centre (-4,5) and radius 6 units?(x - 4)2 + (y + 5)2 = 6(x - 4)2 + (y + 5)2 = 36(x + 4)2 + (y - 5)2 = 6(x + 4)2 + (y - 5)2 = 36
- 14. Multiple Choice
What is the equation of the circle, with centre (7,-3) and radius 8 units?
(x - 7)2 + (y + 3)2 = 8
(x - 7)2 + (y + 3)2 = 64
(x + 7)2 + (y - 3)2 = 8
(x + 7)2 + (y - 3)2 = 64
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