document.write( "Question 1203595: what function could represent the values shown in the table
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Algebra.Com's Answer #839278 by ikleyn(52795) $\"\"$ $\"About$

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document.write( "Notice that the numbers 1,4,7,10,13 form an arithmetic progression with the common difference of 3:\r\n" );
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document.write( "    4-1 = 3;  7-4 = 3;  10-7 = 3;  13-10 = 3.\r\n" );
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document.write( "So, you can use the standard formula for the n-th term of an AP\r\n" );
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document.write( "    Y = 1 + 3*(X-1),  which is the same as  Y = 3X -2,  X = 1,2,3,4,5.\r\n" );
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document.write( "Or, if you don't know about arithmetic progression, you can guess the formula\r\n" );
document.write( "and check its validity directly on your own.\r\n" );
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