document.write( "Question 105383: Solve the system by substitution.
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document.write( " x + 5y = 0
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document.write( " –2x – 4y = 6
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Algebra.Com's Answer #76719 by justices98(1)![]() ![]() ![]() You can put this solution on YOUR website! Solve the system by substitution. \n" ); document.write( "x + 5y = 0 \n" ); document.write( "–2x – 4y = 6 \n" ); document.write( "|||||||||||||||||||\r \n" ); document.write( "\n" ); document.write( "alright im almost 90% positive ill make the answer right. but anyways\r \n" ); document.write( "\n" ); document.write( "since the bottom equation has negatives you could probly subtract the -4y from \n" ); document.write( "-2x -4y = 6 and add it to the other side making it -2x = 6 + 4y. divide -2 from 6 and 4y making the equation look like this x = -3 - 2y, then SUBSTITUTE x to the top equation. 1(-3 -2y) + 5y = 0, take off the parentheses by multiplying 1 by -3 and -2y making the equation -3 -2y +5y = 0, subtract the y from the other y making \n" ); document.write( "-3 + 3y = 0, then add three to the other side, like this -3 +3 +3y = 0 +3 \n" ); document.write( "that gets rid of the 3 on the left side and makes it go on the right side, making \n" ); document.write( "3y = 3, divide and you get y = 1, substitue that for the y's and figure out x then you got a vertex and you're done. gotta let you do some for yourself =]\r \n" ); document.write( "\n" ); document.write( "i hope i did that right but, yea\r \n" ); document.write( "\n" ); document.write( "justices98 \n" ); document.write( " |