document.write( "Question 322183: Determine whether each set of data is linear, quadratic, or neither using finite differences.\r
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Algebra.Com's Answer #230642 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "X  Y  1st differences  \r\n" );
document.write( "0 -1 \r\n" );
document.write( "     1-(-1)=1+1=2\r\n" );
document.write( "1  1\r\n" );
document.write( "            3-1=2\r\n" );
document.write( "2  3\r\n" );
document.write( "            5-3=2\r\n" );
document.write( "3  5\r\n" );
document.write( "            7-5=2\r\n" );
document.write( "4  7\r\n" );
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document.write( "Since the FIRST differences are all the same -- that is, they \r\n" );
document.write( "are all 2's, the data is of a FIRST degree polynomial, which\r\n" );
document.write( "means it is linear, and follows the linear or FIRST DEGREE \r\n" );
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document.write( "y = 2x - 1\r\n" );
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document.write( "Edwin
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