document.write( "Question 1153791: The graph of a line passes through the points (0, -2) and (6, 0). What is the equation of the line? \n" ); document.write( "
Algebra.Com's Answer #776075 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! The graph of a line passes through the points (0, -2) and (6, 0). What is the equation of the line? \n" ); document.write( "---------- \n" ); document.write( "since the intercepts are given, it's \n" ); document.write( "-2x + 6y = -2*6 = -12 \n" ); document.write( "x - 3y = 6 is the simplest. \n" ); document.write( "---------------- \n" ); document.write( "The long way: \n" ); document.write( "find the slope m \n" ); document.write( "m = diffy/diffx = 2/6 = 1/3 \n" ); document.write( "--- \n" ); document.write( "y - y1 = m*(x - x1) where (x1,y1) is either point. \n" ); document.write( "y - 0 = (1/3)*(x - 6) \n" ); document.write( " \n" ); document.write( "===================== \n" ); document.write( "Also: \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "|x y 1|\r\n" ); document.write( "|0 -2 1| = 0\r\n" ); document.write( "|6 0 1|\r\n" ); document.write( "\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "x*(-2*1 - 0*1) - y*(0*1 - 6*1) + 1*(0*0 - 6*-2) = 0 \n" ); document.write( "-2x + 6y + 12 = 0 \n" ); document.write( "-------------- \n" ); document.write( "Several methods, several results, all equivalent.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |