document.write( "Question 338626: Write the equation of the line that passes through (1, 3) and (4, 4) in standard form. \r
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Algebra.Com's Answer #242758 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Write the equation of the line that passes through (1, 3) and (4, 4) in standard form. \n" ); document.write( ". \n" ); document.write( "Standard form of a line: \n" ); document.write( "Ax + By = C where A is a positive integer, and B, and C are integers \n" ); document.write( ". \n" ); document.write( "First, determine slope between the two points using: \n" ); document.write( "m = (y2-y1)/(x2-x1) \n" ); document.write( "m = (4-3)/(4-1) \n" ); document.write( "m = 1/3 (slope) \n" ); document.write( ". \n" ); document.write( "Next, use one of the two points (1,3) and the slope (1/3) and plug it into the \"point-slope\" form: \n" ); document.write( "y-y1 = m(x-x1) \n" ); document.write( "y-3 = (1/3)(x-1) \n" ); document.write( "multiplying both sides by 3: \n" ); document.write( "3y-9 = x-1 \n" ); document.write( "subtracting x from both sides: \n" ); document.write( "-x + 3y-9 = -1 \n" ); document.write( "adding 9 to both sides: \n" ); document.write( "-x + 3y = 8 (this is what they're looking for)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |