Equations of Circles
Authored by Erica Buday
Mathematics
10th Grade
Used 1+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the standard equation of a circle?
(x-k)2 + (y-h)2 = r2
(x+h)2 + (y+k)2 = r2
(x-h)2 + (y-k)2 = r2
(k-x)2 + (h-y)2 = r2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does (h,k) standard for in the standard circle equation?
(h,k) is the center of the circle
(h,k) is a point on the circle.
(h,k) is a point that we guess and find
(h,k) is the distance of the circle
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the r in the standard equation stand for?
r is the distance of the circle
r is the radius of the circle
r is the x coordinate of the center of the circle
r is the y coordinate of the center of the circle
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the center and the radius of the circle with equation, (x-4)2 + (y-2)2 = 25
Center is (5,2) and radius is 4.
Center is (2,5) and radius is 4
Center is (2,4) and radius is 5
Center is (4, 2) and radius is 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the center and radius of a circle with the equation, (x-1)2 + (y-3)2 = 4
Center is (1,3) and radius is 2
Center is (3,1) and radius is 2
Center is (3,2) and radius is 1
Center is (2,3) and radius is 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which equation matches the circle on the graph?
(x-3)2+(y-4)2=16
(x-5)2+(y-2)2=20
(x+3)2+(y+4)2=16
(x-9)2+(y-16)2=32
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The diameter of a circle has length 12. The center is at (-5, 2). Give the equation of the circle.
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