document.write( "Question 1116512: Points (5, – 8) and (9, 4) are endpoints of the diameter of a circle.
\n" ); document.write( "(a) What is the length of the diameter? Give the exact answer, simplified as much as possible.
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\n" ); document.write( " (b) What is the center point C of the circle?
\n" ); document.write( " (c) Given the point C you found in part (b), state the point symmetric to C about the y-axis.
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Algebra.Com's Answer #731409 by stanbon(75887)\"\" \"About 
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Points (5, – 8) and (9, 4) are endpoints of the diameter of a circle.
\n" ); document.write( "(a) What is the length of the diameter? Give the exact answer, simplified as much as possible.
\n" ); document.write( "Show work.
\n" ); document.write( "d = sqrt[(4--8)^2+(9-5)^2] = sqrt[12^2+4^2] = 12.65
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\n" ); document.write( "(b) What is the center point C of the circle?
\n" ); document.write( "x = (5+9)/2 = 7
\n" ); document.write( "y = (-8+4)/2 = -2
\n" ); document.write( "Center (7,-2)
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\n" ); document.write( "(c) Given the point C you found in part (b), state the point symmetric to C about the y-axis.
\n" ); document.write( "Ans (-7,-2)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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