1. Find the center and radius of circle x2 + y--2x-4y+1= 0.

Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter10: Analytic Geometry
Section10.4: Analytic Proofs
Problem 28E
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1. Find the center and radius of circle x2 + y -2x-4y+13D0.
2. Prove that (0, -2), (-4, 8), & (3, 1) lie on the circle with center (-2, 3).
3. Find k given that (2, k) is equidistant from (3, 7) & (9, 1).
4. Find the standard equation of circle if a diameter has end points (2, 0) & (0, 2).
2
.2
5. Find the equation of line tangent the circle x +y
= 25 at point (3, -4).
.2
.2
6. Discuss the equation x+ y+4x-6y%=12.
7. Find the equation of circle with (3, 2), (-1, 6) as the end point of a diameter.
8. Determine whether the point (1, -2) lie inside, out side, or on the circle
.2
x² + y? -8x-4y 5.
Transcribed Image Text:1. Find the center and radius of circle x2 + y -2x-4y+13D0. 2. Prove that (0, -2), (-4, 8), & (3, 1) lie on the circle with center (-2, 3). 3. Find k given that (2, k) is equidistant from (3, 7) & (9, 1). 4. Find the standard equation of circle if a diameter has end points (2, 0) & (0, 2). 2 .2 5. Find the equation of line tangent the circle x +y = 25 at point (3, -4). .2 .2 6. Discuss the equation x+ y+4x-6y%=12. 7. Find the equation of circle with (3, 2), (-1, 6) as the end point of a diameter. 8. Determine whether the point (1, -2) lie inside, out side, or on the circle .2 x² + y? -8x-4y 5.
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