document.write( "Question 626134: Find the value of k so that the line kx-5y=21 will contain the point (-2,-1). \n" ); document.write( "
Algebra.Com's Answer #393987 by Edwin McCravy(20055)\"\" \"About 
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document.write( "Find the value of k so that the line kx-5y=21 will contain the point (-2,-1).\r\n" );
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document.write( "Substitute the point, x=-2, y=-1, into the equation and solve for k to see\r\n" );
document.write( "what k would have to be:\r\n" );
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document.write( "                          kx - 5y = 21\r\n" );
document.write( "                    k(-2) - 5(-1) = 21\r\n" );
document.write( "                          -2k + 5 = 21\r\n" );
document.write( "                              -2k = 16\r\n" );
document.write( "                                k = -8\r\n" );
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document.write( "So the line -8x - 5y = 21 contains the point (-2,-1).\r\n" );
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document.write( "Edwin

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