document.write( "Question 786921: Could you help solve this word problem: There were 174 words typed in 3 minutes. There were 348 words typed in 6 minutes. How many words will be typed in 8 minutes? \n" ); document.write( "
Algebra.Com's Answer #478027 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "That tutor did it an easier way. He was able to because the numbers\r\n" );
document.write( "were easy.  But if they hadn't been, this is how you would do it:\r\n" );
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document.write( "Let x = the number of minutes\r\n" );
document.write( "Let y = the number of words typed.\r\n" );
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document.write( "Then,\r\n" );
document.write( "when x = 3, y = 174, and\r\n" );
document.write( "when x = 6, y = 348\r\n" );
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document.write( "So we find the equation of the line through the two points\r\n" );
document.write( "(3,174) and (6,348)\r\n" );
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document.write( "First we use the slope formula:\r\n" );
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document.write( "Slope formula:\r\n" );
document.write( "m = \"%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"\r\n" );
document.write( "where (x1,y1) = (3,174)\r\n" );
document.write( "and where (x2,y2) = (6,348)\r\n" );
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document.write( "Then the point-slope formula:\r\n" );
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document.write( "Point-slope formula:\r\n" );
document.write( "y - y1 = m(x - x1)\r\n" );
document.write( "where (x1,y1) = (3,174)\r\n" );
document.write( "and where the slope m is the value you got from \r\n" );
document.write( "the slope formula\r\n" );
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document.write( "Then when you get the equation, solve for y,\r\n" );
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document.write( "Finally, substitute 8 minutes for x, and simplify and that\r\n" );
document.write( "will be the answer.\r\n" );
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document.write( "Edwin

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