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Q1:
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Which of the following equations would have a circle as its graph? |
A. y = x2 = 1
B. y2 - x = 1
C. x2+ y2= 1
D. (xy)2 = 1 |
Answer 1:
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Q2:
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What is the radius of a circle with the equation
x2+ (y - 2)2 = 9 ?
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A. 3
B. 81
C. 9
D. 4.5 |
Answer 2:
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Q3:
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What is the centre of the equation in question 2? |
A. (0, -2)
B. (0, 2)
C. (2, 0)
D. (-2, 0) |
Answer 3:
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Q4:
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Which statement is true for the radius, r, of the circle below?
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A. r > 5
B. r = 5
C. 4 < r < 5
D. 0 < r < 4 |
Answer 4:
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Q5:
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Which of the following is a possible equation for the diagram in Question 4? |
A. x2 + 5y2 = 24
B. (x + 5)2 + y2 = 24
C. (x - 5)2 + y2 = 24
D. x2 + y2 = 5
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Answer 5:
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Q6:
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Which of the following vectors would translate the
point (0, 0) to the centre of the circle given by the equation
(x - 3)2 +(y + 2)2 = 25
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Answer 6:
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Q7:
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The equation of a circle, centre the origin and radius 1 is: |
A. xy = 1
B. x2 + y2 = 1
C. y = x2 + 1
D. x2 - y2 = 1
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Answer 7:
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Q8:
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The diagram shows the graph with the equation
(x - 7)2 + (y + 6)2 = 121
What is the radius of the circle?
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A. 121
B. 60.5
C. 11
D. 49 |
Answer 8:
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Q9:
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What is the centre of the circle in question 8? |
A. (7, -6)
B. (6, -7)
C. (6, 7)
D. (7, 6) |
Answer 9:
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Q10:
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What type of transformation would map the circle
x2 + y2 = 9 to (x - 4)2 + (y + 8)2 = 9
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A. reflection
B. rotation
C. translation
D. enlargement |
Answer 10:
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