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1. |
Find the coordinates of the center of a circle with equation
x2 + y2 - 2x + 8y + 13 = 0. |
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A. |
(-1, 4) |
B. |
(1, -4) |
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C. |
(-1, -4) |
D. |
(1, 4) |
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Hint |
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2. |
What is an equation for a circle if the endpoints of a diameter are at (3, 4) and (-3, -2)? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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3. |
What is an equation for a circle with a center at (3, -1) that is tangent to the line x = 7? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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4. |
What is equidistant to all of the points on a circle? |
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A. |
radius |
B. |
center |
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C. |
diameter |
D. |
tangent line |
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Hint |
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5. |
Which of the following could be the center of a circle that is tangent to the lines y = 3 and x = –2? |
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A. |
(-3, 1) |
B. |
(2, 1) |
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C. |
(2, -1) |
D. |
(0, 0) |
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Hint |
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