document.write( "Question 1191125: Find the image of point (5,3) when it is rotated 1/4 turn counter-clockwise around the point (1,-4) \n" ); document.write( "
Algebra.Com's Answer #822895 by Edwin McCravy(20062)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "You can tell the answer is (-6,0).  \r\n" );
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document.write( "To rotate 90 counter-clockwise about a center point, \r\n" );
document.write( "1. count the number of horizontal and vertical units it is from the \r\n" );
document.write( "   center point to the original point.   \r\n" );
document.write( "2. The image point will be the same number of units horizontal from\r\n" );
document.write( "   the center point as the original point is vertical from the center \r\n" );
document.write( "   point.\r\n" );
document.write( "3. The image point will be the same number of units vertical from\r\n" );
document.write( "   the center point as the original point is horizontal from the center \r\n" );
document.write( "   point.  \r\n" );
document.write( "4. There are rules about going right, left, up, or down, but it's\r\n" );
document.write( "   easier just to use common sense.\r\n" );
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document.write( "To get from the center point to the original point, we had to go right 4\r\n" );
document.write( "units and up 7 units.  Therefore to get from the center point to the\r\n" );
document.write( "image point we had to go left 7 units and up 4 units.  The \"left\" and\r\n" );
document.write( "\"up\" we got from common sense, because if you went any other way it \r\n" );
document.write( "would not look like a rotation of 90o.\r\n" );
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document.write( "Edwin

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