document.write( "Question 1142367: Please help me solve this:\r
\n" ); document.write( "\n" ); document.write( "Suppose AB is the diameter of a circle, where A = (−1, 1) and B = (−4, −5). The equation of the circle is\r
\n" ); document.write( "\n" ); document.write( "1. (x + 5/2)^2 + (y + 2)^2 = 45
\n" ); document.write( "2. 4(x + 5/2)^2 + 4(y + 2)^2 = 45
\n" ); document.write( "3. (x − 5/2)^2 + (y − 2)^2 = 45
\n" ); document.write( "4. 4(x − 5/2)^2 + 4(y − 2)^2 = 45
\n" ); document.write( "5. 2(x + 5/2)^2 + 2(y + 2)^2 = sqrt (45)
\n" ); document.write( "

Algebra.Com's Answer #763152 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The center of the circle is the midpoint of the diameter AB.

\n" ); document.write( "The radius of the circle is half the length of the diameter AB.

\n" ); document.write( "The equation of a circle with center (h,k) and radius r is, in standard form,

\n" ); document.write( "\"%28x-h%29%5E2%2B%28y-k%29%5E2+=+r%5E2\"

\n" ); document.write( "(1) What are the coordinates of the center?
\n" ); document.write( "(2) What is the radius?
\n" ); document.write( "(3) What is the equation?
\n" ); document.write( "
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