document.write( "Question 923980: I just want to check if my answer is correct.\r
\n" ); document.write( "\n" ); document.write( "The problem is: Find the center of the circle passing through (9,-2),(2,5),(-3,6).
\n" ); document.write( "My answer is: (-3,-7) \n" ); document.write( "

Algebra.Com's Answer #560524 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "I just want to check if my answer is correct.\r
\n" ); document.write( "\n" ); document.write( "The problem is: Find the center of the circle passing through (9,-2),(2,5),(-3,6).
\n" ); document.write( "My answer is: (-3,-7)
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document.write( "That's correct!!\r
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document.write( "Plug each point into the center-radius equation, since each radius will have the same center point
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document.write( "(h, k), and radius, r
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document.write( "(9, - 2) 
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document.write( " ------- eq (i)
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document.write( "(2, 5) 
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document.write( " ------- eq (ii)
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document.write( "(- 3, 6) 
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document.write( " ------- eq (iii)\r
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document.write( " ------- eq (i)
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document.write( " ------ eq (ii)
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document.write( "– 14h + 14k = - 56 ------ Subtracting eq (ii) from eq (i)
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document.write( "– 14(h - k) = - 14(4) 
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document.write( "h - k = 4 ----------- eq (iv)\r
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document.write( " ------ eq (ii)
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document.write( " ------ eq (iii)
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document.write( "– 10h + 2k = 16 ------ Subtracting eq (iii) from eq (ii) 
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document.write( "- 2(5h - k) = - 2(- 8)
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document.write( "5h - k = - 8 --------- eq (v)\r
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document.write( "   h - k =   4 -------- eq (iv)
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document.write( "  5h - k = - 8 -------- eq (v) 
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document.write( "- 4h     =  12 -------- Subtracting eq (v) from eq (iv)
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document.write( "  , or – 3 \r
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document.write( "- 3 - k = 4 ----- Substituting - 3 for h in eq (iv) 
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document.write( "    - k = 4 + 3
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document.write( "    – k = 7
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document.write( "      , or - 7
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document.write( "With h = - 3, and k = - 7, center coordinate point (h, k) is:  \n" );
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