Algebra.Com's Answer #699759 by ikleyn(52781)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "Find the equation, in standard form, of the circle being described in each item.\r
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document.write( "1. center (2/5, - 3/7), radius 11  =  \r\n" );
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document.write( "2. diameter with endpoints (-1,3) and (9,1)  =  \r\n" );
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document.write( "3.diameter with endpoints (3,-5) and (6,4)\r\n" );
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document.write( "4.center (-6,-3), through (-10,3)\r\n" );
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document.write( "5. center (5,7), tangent to the x-axis  =  \r\n" );
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document.write( "6. center (-4,9), tangent to the x-axis  =  \r\n" );
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document.write( "And last problem, i need help from this.\r\n" );
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document.write( "Find the equations of the lines described. Give your answers in the form y=mx+b.\r\n" );
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document.write( "here i use (x²+y²-18x-2y+48=0 at x=4) using same on 3 problems\r\n" );
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document.write( "1.tangent lines to x²+y²-18x-2y+48=0 at points where x=4\r\n" );
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document.write( "2. tangent lines to x²+y²-22x+12y+137=0 at points where x=15\r\n" );
document.write( "3. tangent lines to x²+y²-16x-12y+87=0 at points where y=4\r\n" );
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document.write( "When you submit many problems in one post, you work against yourself.\r
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