document.write( "Question 27626: /2x-3/=7 find the solution set for the equation\r
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document.write( "/x-4/=4 find the solution set for the equation
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Algebra.Com's Answer #15069 by longjonsilver(2297)![]() ![]() You can put this solution on YOUR website! ok, first for the easier part: \n" ); document.write( "2x-3=7 \n" ); document.write( "2x = 10 \n" ); document.write( "x = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this solution is seen on the graph of y=2x-3 and y=7... they intersect at x=5, as shown: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now the action of the modulus around the 2x-3 means that it will not allow negative values of y, so to the left of x=1.5, the straight line will \"break\" into a V shape and head back up to the top left\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now, mathematically, to see this \"rebounded\" portion of the line, we put a negative sign in front of the equation, like -(2x-3) = 7.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-2x+3 = 7 \n" ); document.write( "-2x = 4 \n" ); document.write( "x = -2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This can be seen if we ploy y = -(2x-3) against y=7, as shown: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jon.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |