Unit Test — Unit test Answers
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21
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A
The point (3.6, 0) is the directrix.B
The point (−3.6, 0) is the center.C
The point (2, 0) is a focus.D
The point (−2, 0) is a vertex.22
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A hyperbola centered at the origin has a vertex at (9, 0) and a focus at (−15, 0). Which are the equations of the asymptotes?
A
y = ±x
B
y = ±x
C
y = ±x
D
y = ±x
23
Question text not available
A
= 1
B
= 1
C
= 1
D
= 1
24
Which statements about the ellipse are true? Select three options.
A
The center is at (0, 0).B
The major axis is 4 units long.C
The vertices are 4 units to the left and right of the center.D
The foci are units to the left and right of the center on the major axis.
E
The directrices are vertical lines.25
The equation represents an ellipse.Which points are the approximate locations of the foci of the ellipse? Round to the nearest tenth.
A
(−8, −4.6) and (−8, 2.6)B
(−2.6, −8) and (4.6, 8)C
(1, 4.4) and (1, 11.6)D
(11.6, 1) and (4.4, 1)Did you find these answers helpful?
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