2.4. What is the center and the radius of a circle given by the equation x² + y² + 4x – 10y + 20 = 0?

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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2.4. What is the center and the radius of a circle given by the equation x? + y? + 4x – 10y + 20 =
0?
A. (-2,5) and r = v20
B. (2, –5) and r = v20
C. (-2,5) and r = 3
D. (2, –5) and r = 3
Transcribed Image Text:2.4. What is the center and the radius of a circle given by the equation x? + y? + 4x – 10y + 20 = 0? A. (-2,5) and r = v20 B. (2, –5) and r = v20 C. (-2,5) and r = 3 D. (2, –5) and r = 3
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