Graphing Polar Equations — Unit test Answers
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What are the foci of the hyperbola whose equation is = 1?
A
(−6, 2) and (14, 2)B
(−4, 2) and (12, 2)C
(4,−8) and (4, 12)D
(4,−6) and (4, 10)22
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Graph .
A
On a coordinate plane, an Ellipse has center point (0, negative 1) and goes through points (0, 1), (7, negative 1), (0, negative 3), and (negative 7, negative 1).B
On a coordinate plane, an Ellipse has center point (0, 1) and goes through points (0, 3), (7, 1), (0, negative 1), and (negative 7, 1).C
On a coordinate plane, an ellipse has center point (0, 0) and goes through (0, 8), (2, 0), (0, negative 8), and (negative 2, 0).D
On a coordinate plane, an ellipse has center point (0, 0.5) and goes through (0, 8), (2, 0), (0, negative 9), and (negative 2, 0).23
A pair of listening posts picks up a sound, with one listening post recording the sound after the other. The equation represents possible locations of the sound source with units in feet. How far apart are the listening posts?
A
1,375 ftB
2,750 ftC
3,000 ftD
6,000 ft24
Which equation represents the rectangular form of r = 4cos(θ)?
A
(x – 2)2 + y2 = 4B
(x + 2)2 + y2 = 4C
(x – 2)2 + y2 = 0D
(x + 2)2 + y2 = 025
Eliminate the parameter in the equations x = 5cos(t) – 7 and y = 5sin(t) + 9. How can the rectangular equation be described?
A
circleB
ellipseC
parabolaD
hyperbolaDid you find these answers helpful?
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