document.write( "Question 857227: Hi! I'm stuck on this question in my math and its says \"Determine which of the points is a solution to the system.\" Hopefully I got the right topic haha :) Okay so this is the question:\r
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document.write( "y=2x-3 (4,-4);(2,1);(3,3)
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document.write( "4x+y=15\r
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document.write( " Thanks! -Savanah
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Algebra.Com's Answer #516430 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! \"Determine which of the points is a solution to the system.\" Hopefully I got the right topic haha :) Okay so this is the question: \n" ); document.write( "y=2x-3 \n" ); document.write( "(4,-4);(2,1);(3,3) \n" ); document.write( "4x+y=15 \n" ); document.write( "----------------- \n" ); document.write( "2 ways to do it. \n" ); document.write( "There are 3 points, try them in both equations. \n" ); document.write( "(4,-4) \n" ); document.write( "y = 2x-3 \n" ); document.write( "-4 = 2*4 - 3 ? NG \n" ); document.write( "---------- \n" ); document.write( "(2,1) \n" ); document.write( "4x+y = 15 \n" ); document.write( "4*2 + 1 = 15 ? NG \n" ); document.write( "-------- \n" ); document.write( "(3,3) \n" ); document.write( "(3,3) fits both. \n" ); document.write( "==================== \n" ); document.write( "Another way is to solve the system of equations. \n" ); document.write( "y=2x-3 \r \n" ); document.write( "\n" ); document.write( "4x+y=15 \n" ); document.write( "-- \n" ); document.write( "Sub for y in the 2nd eqn \n" ); document.write( "4x + (2x-3) = 15 \n" ); document.write( "6x - 3 = 15 \n" ); document.write( "6x = 18 \n" ); document.write( "x = 3 \n" ); document.write( "--- \n" ); document.write( "y = 2x-3 \n" ); document.write( "y = 3 \n" ); document.write( "--> (3,3)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |