Equation of a circle
10th grade (Year 11 in England) · 16 questions · Common Core: HSG.GPE.A.1 · England: GCSE Higher Algebra
Name
Date
Score/ 16
Question 1
What is the centre of the circle (x − 3)² + (y + 4)² = 4? Type it like (2, −1).
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Question 2
The circle x² + y² = r² passes through (−9, 12). What is r?
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Question 3
What is the radius of the circle (x − 6)² + y² = 1?
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Question 4
The circle x² + y² = r² passes through (6, 8). What is r?
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Question 5
What is the centre of the circle (x + 6)² + (y + 5)² = 4? Type it like (2, −1).
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Question 6
The circle x² + y² = r² passes through (6, −8). What is r?
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Question 7
What is the centre of the circle (x − 3)² + (y − 6)² = 4? Type it like (2, −1).
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Question 8
The circle x² + y² = r² passes through (−6, −8). What is r?
Answer
Question 9
What is the centre of the circle (x − 6)² + (y + 6)² = 49? Type it like (2, −1).
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Question 10
The circle x² + y² = r² passes through (−12, −9). What is r?
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Question 11
What is the radius of the circle (x − 3)² + (y − 2)² = 36?
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Question 12
The circle x² + y² = r² passes through (−5, 12). What is r?
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Question 13
What is the centre of the circle (x − 3)² + (y + 2)² = 16? Type it like (2, −1).
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Question 14
The circle x² + y² = r² passes through (6, 8). What is r?
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Question 15
What is the radius of the circle (x + 4)² + (y − 1)² = 25?
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Question 16
The circle x² + y² = r² passes through (−6, −8). What is r?
Answer
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