document.write( "Question 737277: Can you help me homework ?
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Algebra.Com's Answer #450267 by Ed Parker(21)\"\" \"About 
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3. (8,1), (1,y); m = -1
\n" ); document.write( "I don't understand how to do this. Can you explain it to me ?
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document.write( "You are given a point (ordered pair) (8,1) and a slope m = -1.\r\n" );
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document.write( "So you begin by using the point-slope formula:\r\n" );
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document.write( "y - y1 = m(x - x1)  where (x1, y1) = (8,1)\r\n" );
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document.write( "Plugging in and solving for y\r\n" );
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document.write( "y - 1 = -1(x - 8)\r\n" );
document.write( "y - 1 = -x + 8\r\n" );
document.write( "    y = -x + 9\r\n" );
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document.write( "Now you are asked to find  y in (1,y)\r\n" );
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document.write( "That just asks, \"What is y when x is 1?\"\r\n" );
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document.write( "So we just plug in 1 for x and solve for y:\r\n" );
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document.write( "    y = -x + 9\r\n" );
document.write( "    y = -1 + 9\r\n" );
document.write( "    y = 8\r\n" );
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document.write( "So (1,y) is (1,8)\r\n" );
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document.write( "Edwin
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