document.write( "Question 1103751: the vertices of RST are R(1,-1) S(4,1) and T(4,-3). what are the coordinates of the image after a 90 rotation about the origin? \n" ); document.write( "
Algebra.Com's Answer #718443 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Use the rule,
\n" ); document.write( "(x,y)->(y,-x)
\n" ); document.write( "So,
\n" ); document.write( "(4,1)->(-1,4)
\n" ); document.write( "Do the others the same way.
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