83-90 - Equations of Circles Show that the equation represents a circle, and find the center and radius of the circle. 83. + y - 2x + 4y +1-0 84. + y - 2x - 2y = 2 85. * + y - 4x + 10y + 13 = 0 86. + y + 6y + 2 =0 88. + y + 2x + y + I=0 90. + y* + x + 2y + = 0 87. + y +x = 0 89. + y - x + ty =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.2: Graphs Of Equations
Problem 9E
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83–90 ■ Equations of Circles Show that the equation represents
a circle, and find the center and radius of the circle.

83-90 - Equations of Circles Show that the equation represents
a circle, and find the center and radius of the circle.
83. + y - 2x + 4y +1-0
84. + y - 2x - 2y = 2
85. * + y - 4x + 10y + 13 = 0
86. + y + 6y + 2 =0
88. + y + 2x + y + I=0
90. + y* + x + 2y + = 0
87. + y +x = 0
89. + y - x + ty =
Transcribed Image Text:83-90 - Equations of Circles Show that the equation represents a circle, and find the center and radius of the circle. 83. + y - 2x + 4y +1-0 84. + y - 2x - 2y = 2 85. * + y - 4x + 10y + 13 = 0 86. + y + 6y + 2 =0 88. + y + 2x + y + I=0 90. + y* + x + 2y + = 0 87. + y +x = 0 89. + y - x + ty =
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