1.a. x2 + y2 = 36
b. (x − 2)2 + (y + 1)2 = 16
c. (x − 2)2 + (y − 3)2 = 4
2. a. x2 + y2 = 25
b. (x + 3)2 + (y + 2)2 = 49
c. (x − 3)2 + (y − 4)2 = 10
d. (x + 3)2 + (y + 5)2 = 58
3. a. Centre is (3, -2) and radius is 8
b. Centre is (-1, 4) and radius is 6
c. Centre is (2, -2) and radius is √ 20
d. Centre is (0, -1) and radius is √ 8
4.
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a.
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b.
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c.
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d.
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