document.write( "Question 366322: Is the point (3,-1) on the graph of 4x - y = 13? \n" ); document.write( "
Algebra.Com's Answer #260995 by robertb(5830)\"\" \"About 
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Substitute directly: 4*3 - -1 = 12+1 = 13. The coordinates of the point check out into the equation, so the point is on the line. \n" ); document.write( "
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