document.write( "Question 482458: solve the system of equations: a)graphically b)numerically x+2y=4,x+y=1 \n" ); document.write( "

Algebra.Com's Answer #330284 by mananth(16946) $\"\"$ $\"About$

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equation1
\n" ); document.write( "when x= 0, y= 2 ( 0 , 2 ) 2
\n" ); document.write( "when y = 0, x= 4 ( 4 , 0 )
\n" ); document.write( "Equation 2
\n" ); document.write( "when x= 0, y= 1 ( 0 , 1 ) 1
\n" ); document.write( "when y = 0, x= 1 ( 1 , 0 )\r
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\n" ); document.write( "\n" ); document.write( " x + 2 y = 4 .............1
\n" ); document.write( " x + y = 1 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by -2
\n" ); document.write( "1 x + 2 y = 4
\n" ); document.write( "-2 x + -2 y = -2
\n" ); document.write( "Add the two equations
\n" ); document.write( "-1 x = 2
\n" ); document.write( "/ -1
\n" ); document.write( "x = -2
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 2 y = 4
\n" ); document.write( "-2 + 2 y = 4
\n" ); document.write( " 2 y = 4 + 2
\n" ); document.write( " 2 y = 6
\n" ); document.write( " y = 3
\n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( "

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