Page 90 - Senior Math
P. 90
Graph each of the following circles.
1)
(𝑥−2)2 +(𝑦−3)2 =9
2) (𝑥+3)2 +(𝑦−4)2 =25
3)
𝑥2 +𝑦2 −8𝑥−6𝑦+21=0
4) 𝑥2 +𝑦2 −10𝑥+12𝑦+12=0
5)
𝑥2 +𝑦2 +8𝑥+18𝑦+88=0
6) 𝑥2 +𝑦2 +14𝑥=0
Write 7)
9)
an equation of the circle described. Expand one of the equations.
𝐶(2,5),𝑟 = 4
𝐶(4,−2),𝑟 = 2
8) 𝐶(−1,2),𝑟 = 8
10) 𝐶(−7,−5),𝑟 = 11
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