Q. For the ellipse defined by the equation 9x^2 + 16y^2 = 144, what are the lengths of the semi-major and semi-minor axes?
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A.
3, 4
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B.
4, 3
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C.
6, 8
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D.
8, 6
Solution
The semi-major axis is 4 and the semi-minor axis is 3 after rewriting the equation in standard form.
Correct Answer: A — 3, 4
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Q. For the hyperbola x^2/25 - y^2/16 = 1, what is the distance between the foci?
Solution
The distance between the foci of the hyperbola is 2c, where c = √(a^2 + b^2) = √(25 + 16) = √41, so the distance is 2√41.
Correct Answer: A — 10
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Q. If the directrix of a parabola is given by the equation y = -p, what is the equation of the parabola?
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A.
y^2 = 4px
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B.
x^2 = 4py
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C.
y^2 = -4px
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D.
x^2 = -4py
Solution
The equation of a parabola with directrix y = -p is y^2 = -4px.
Correct Answer: C — y^2 = -4px
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Q. If the eccentricity of a parabola is e, what is the value of e?
Solution
The eccentricity of a parabola is always equal to 1.
Correct Answer: B — 1
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Q. If the equation of a parabola is given by y^2 = 12x, what is the value of 'p'?
Solution
In the equation y^2 = 4px, p = 3, hence the value of 'p' is 3.
Correct Answer: B — 6
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Q. The equation of an ellipse with foci at (0, ±c) and major axis along the y-axis is given by?
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A.
x^2/a^2 + y^2/b^2 = 1
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B.
y^2/a^2 + x^2/b^2 = 1
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C.
x^2/b^2 + y^2/a^2 = 1
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D.
y^2/b^2 + x^2/a^2 = 1
Solution
The equation of an ellipse with foci at (0, ±c) and major axis along the y-axis is y^2/a^2 + x^2/b^2 = 1.
Correct Answer: B — y^2/a^2 + x^2/b^2 = 1
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Q. The equation of the directrix of the parabola y^2 = 8x is?
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A.
x = -2
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B.
x = 2
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C.
y = -4
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D.
y = 4
Solution
The directrix of the parabola y^2 = 8x is given by x = -2.
Correct Answer: A — x = -2
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Q. The foci of the ellipse x^2/16 + y^2/9 = 1 are located at?
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A.
(±4, 0)
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B.
(0, ±3)
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C.
(±3, 0)
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D.
(0, ±4)
Solution
For the ellipse x^2/16 + y^2/9 = 1, the foci are located at (±4, 0) where c = √(16 - 9) = 4.
Correct Answer: A — (±4, 0)
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Q. The vertices of the ellipse 9x^2 + 16y^2 = 144 are located at?
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A.
(±4, 0)
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B.
(0, ±3)
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C.
(±3, 0)
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D.
(0, ±4)
Solution
The vertices of the ellipse 9x^2 + 16y^2 = 144 are located at (±3, 0).
Correct Answer: C — (±3, 0)
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Q. What is the distance between the foci of the ellipse given by the equation 4x^2 + 9y^2 = 36?
Solution
The distance between the foci is 6, calculated using the formula 2c where c = √(a^2 - b^2).
Correct Answer: A — 6
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Q. What is the distance between the foci of the ellipse x^2/25 + y^2/16 = 1?
Solution
The distance between the foci is given by 2c, where c = √(a^2 - b^2) = √(25 - 16) = 3, so the total distance is 2c = 6.
Correct Answer: A — 7
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Q. What is the eccentricity of a hyperbola defined by the equation x^2/a^2 - y^2/b^2 = 1?
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A.
1
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B.
√2
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C.
√(1 + b^2/a^2)
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D.
√(1 - b^2/a^2)
Solution
The eccentricity e of a hyperbola is given by e = √(1 + b^2/a^2).
Correct Answer: C — √(1 + b^2/a^2)
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Q. What is the equation of a circle with center at (h, k) and radius r?
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A.
(x - h)^2 + (y - k)^2 = r^2
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B.
(x + h)^2 + (y + k)^2 = r^2
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C.
(x - h)^2 - (y - k)^2 = r^2
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D.
(x + h)^2 - (y + k)^2 = r^2
Solution
The equation of a circle with center at (h, k) and radius r is (x - h)^2 + (y - k)^2 = r^2.
Correct Answer: A — (x - h)^2 + (y - k)^2 = r^2
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Q. What is the equation of the directrix of the parabola x^2 = 8y?
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A.
y = -2
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B.
y = 2
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C.
x = -4
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D.
x = 4
Solution
The directrix of the parabola x^2 = 8y is y = -2.
Correct Answer: A — y = -2
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Q. What is the equation of the ellipse with center at the origin, semi-major axis 5, and semi-minor axis 3?
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A.
x^2/25 + y^2/9 = 1
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B.
x^2/9 + y^2/25 = 1
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C.
x^2/15 + y^2/5 = 1
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D.
x^2/5 + y^2/15 = 1
Solution
The equation of the ellipse is x^2/25 + y^2/9 = 1.
Correct Answer: A — x^2/25 + y^2/9 = 1
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Q. What is the length of the latus rectum of the ellipse x^2/a^2 + y^2/b^2 = 1?
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A.
2b^2/a
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B.
2a^2/b
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C.
2a
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D.
2b
Solution
The length of the latus rectum of the ellipse is given by 2a^2/b.
Correct Answer: B — 2a^2/b
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Q. What is the length of the latus rectum of the parabola y^2 = 4ax?
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A.
2a
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B.
4a
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C.
a
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D.
None of the above
Solution
The length of the latus rectum of the parabola y^2 = 4ax is 4a.
Correct Answer: A — 2a
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Q. What is the length of the latus rectum of the parabola y^2 = 8x?
Solution
The length of the latus rectum of the parabola y^2 = 8x is 4.
Correct Answer: A — 4
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Q. What is the standard form of the equation of a parabola that opens upwards with vertex at the origin?
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A.
y^2 = 4ax
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B.
x^2 = 4ay
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C.
y^2 = -4ax
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D.
x^2 = -4ay
Solution
The standard form of a parabola that opens upwards is given by x^2 = 4ay.
Correct Answer: B — x^2 = 4ay
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Q. Which of the following is the equation of a hyperbola with transverse axis along the x-axis?
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A.
x^2/a^2 - y^2/b^2 = 1
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B.
y^2/a^2 - x^2/b^2 = 1
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C.
x^2/b^2 - y^2/a^2 = 1
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D.
y^2/b^2 - x^2/a^2 = 1
Solution
The equation of a hyperbola with transverse axis along the x-axis is x^2/a^2 - y^2/b^2 = 1.
Correct Answer: A — x^2/a^2 - y^2/b^2 = 1
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Q. Which of the following is the equation of an ellipse with foci at (0, ±c) and vertices at (0, ±a)?
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A.
x^2/a^2 + y^2/b^2 = 1
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B.
y^2/a^2 + x^2/b^2 = 1
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C.
x^2/b^2 + y^2/a^2 = 1
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D.
y^2/b^2 + x^2/a^2 = 1
Solution
The equation of an ellipse with foci at (0, ±c) and vertices at (0, ±a) is y^2/a^2 + x^2/b^2 = 1.
Correct Answer: A — x^2/a^2 + y^2/b^2 = 1
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Q. Which of the following represents a hyperbola with transverse axis along the x-axis?
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A.
x^2/a^2 - y^2/b^2 = 1
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B.
y^2/a^2 - x^2/b^2 = 1
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C.
x^2/b^2 - y^2/a^2 = 1
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D.
y^2/b^2 - x^2/a^2 = 1
Solution
The equation x^2/a^2 - y^2/b^2 = 1 represents a hyperbola with transverse axis along the x-axis.
Correct Answer: A — x^2/a^2 - y^2/b^2 = 1
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