Equations of circles SAT Circles
Authored by Brett Hofstrom
Mathematics
8th - 11th Grade
Used 4+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write the equation of a circle with center (7, 0) with radius 3.
(x - 7)2 + y2 = 9
x2 + (y -7)2 = 9
(x - 7)2 + y2 = 3
x2 + (y -7)2 = 3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the coordinates of the center and the radius of the circle with equation:
(x - 4)2 + (y - 3)2 = 25 ?
Center (4,3)
Radius = 5 units
Center (4,3)
Radius = 25 units
Center (-4,-3)
Radius = 25 units
Center (-4,-3)
Radius = 5 units
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the equation of the circle?
(x+1)2 + (y +1)2 = 3
(x+1)2 + (y -1)2 = 3
(x+1)2 + (y +1)2 = 9
(x-1)2 + (y -1)2 = 9
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the radius of the circle
(x+7)²+(y-2)²=144?
7
12
24
144
5.
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.
(x - 2)2 + (y + 5)2 = 36
(x - 5)2 + (y + 2)2 = 6
(x + 5)2 + (y - 2)2 = 36
(x + 2)2 + (y - 5)2 = 6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A circle has the equation
x2 + y2 - 12x + 8y + 3 = 0. Write the equation in standard form.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which graph corresponds to
(x-4)2+ (y+4)2=25
A
B
C
D
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