| 1 |
If r is the radius of any circle and C its center, then any point P(x<sub>1</sub>, y<sub>1</sub>) lies on the circle only if: |
- A. |CP| < r
- B. |CP| > r
- C. |CP| = r
- D. None of these
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| 2 |
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| 3 |
The center of circle x<sup>2</sup> + y<sup>2</sup> + 2gx + 2fy + c = 0 is: |
- A. (-g, -f)
- B. (-f, -g)
- C. (0, 0)
- D. (g, f)
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| 4 |
An angle in a semi-circle is: |
- A. 0°
- B. 90°
- C. 180°
- D. 60°
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| 5 |
If the equation of the parabola is y<sup>2</sup> = - 4ax, then opening of the parabola is to the ______ of the y-axis: |
- A. Left
- B. Upward
- C. Right
- D. Downward
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| 6 |
The directrix of the parabola y<sup>2</sup> = 4ax is: |
- A. x = a
- B. x = -a
- C. y = a
- D. y = - a
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| 7 |
The radius of circle x<sup>2</sup> + y<sup>2</sup> + ax + by + c = 0 is: |
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| 8 |
The graph of the parabola y<sup>2</sup> = -4ax is symmetric about: |
- A. x-axis
- B. major axis
- C. y-axis
- D. minor axis
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| 9 |
A line perpendicular to a radial chord of a circle at the end-point (which lies on the circle) is a: |
- A. Secant
- B. Diameter
- C. Chord
- D. Tangent
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| 10 |
y<sup>2</sup> = 4ax, is the standard equation of the: |
- A. Ellipse
- B. Parabola
- C. Hyperbola
- D. None of these
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