document.write( "Question 1209062: The midpoint of the line segment from A to B is (5,-4). If B = (7,-2), what is A? \n" ); document.write( "
Algebra.Com's Answer #847642 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "Point  \" A \"  is the mirror reflection of point  B  in the mirror,
\n" ); document.write( "if the mirror is established at the midpoint and directed to point  B. \r
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\n" ); document.write( "\n" ); document.write( "By knowing it,  you do the rest mechanically.\r
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