Graphing Circles

Flashcard
•
Mathematics
•
9th - 11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the standard form of the equation of a circle?
Back
(x - h)² + (y - k)² = r², where (h, k) is the center and r is the radius.
2.
FLASHCARD QUESTION
Front
How do you find the center of a circle from its equation?
Back
The center (h, k) can be found from the equation (x - h)² + (y - k)² = r².
3.
FLASHCARD QUESTION
Front
What is the radius of a circle in the equation (x - 2)² + (y + 3)² = 25?
Back
The radius is √25 = 5.
4.
FLASHCARD QUESTION
Front
What does the term 'h' represent in the circle equation?
Back
The 'h' value represents the x-coordinate of the center of the circle.
5.
FLASHCARD QUESTION
Front
What does the term 'k' represent in the circle equation?
Back
The 'k' value represents the y-coordinate of the center of the circle.
6.
FLASHCARD QUESTION
Front
If the equation of a circle is x² + y² = 36, what is the radius?
Back
The radius is √36 = 6.
7.
FLASHCARD QUESTION
Front
What is the center of the circle given by the equation (x + 1)² + (y - 4)² = 9?
Back
The center is (-1, 4).
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