document.write( "Question 569457: what's
\n" ); document.write( "4x+3y=10
\n" ); document.write( "y=2x
\n" ); document.write( "in sustitution method??
\n" ); document.write( "plz answer asap!!1
\n" ); document.write( "thnxx \n" ); document.write( "

Algebra.Com's Answer #367334 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+4x%2B3y=10+\"$
\n" ); document.write( "(2) $\"+y=2x+\"$
\n" ); document.write( "Substitute (2) into (1)
\n" ); document.write( "(1) $\"+4x+%2B+3%2A%282x%29+=+10+\"$
\n" ); document.write( "(1) $\"+4x+%2B+6x+=+10+\"$
\n" ); document.write( "(1) $\"+10x+=+10+\"$
\n" ); document.write( "(1) $\"+x+=+1+\"$
\n" ); document.write( "and, since
\n" ); document.write( "(2) $\"+y+=+2x+\"$
\n" ); document.write( "(2) $\"+y+=+2%2A1+\"$
\n" ); document.write( "(2) $\"+y+=+2+\"$
\n" ); document.write( "So, the solution is ( 1,2 )
\n" ); document.write( "Here's a plot of the lines
\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-6%2C+6%2C+-6%2C+6%2C+2x%2C+-%284%2F3%29%2Ax+%2B+10%2F3+%29+\"$ \n" ); document.write( "

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