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Decide Whether or Not the Equation Has a Circle as Its

Question 436

Multiple Choice

Decide whether or not the equation has a circle as its graph. If it does not, describe the graph.
- $2 x ^ { 2 } + 2 y ^ { 2 } + 16 x - 4 y + 26 = 0$

A) no; the graph is the point $( 4 , - 1 )$
B) yes
C) no; the graph is the point $( - 4,1 )$
D) no; the graph is nonexistent

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