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

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.2: Graphs Of Equations
Problem 55E
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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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