document.write( "Question 241396: 4x-5y=11
\n" ); document.write( " x+2y=7 \n" ); document.write( "

Algebra.Com's Answer #176843 by checkley77(12844) $\"\"$ $\"About$

You can put this solution on YOUR website!
4x-5y=11
\n" ); document.write( "-5y=-4x+11
\n" ); document.write( "y=-4x/-5+11/-5
\n" ); document.write( "y=4x/5-11/5 (red line)
\n" ); document.write( "x+2y=7
\n" ); document.write( "2y=-x+7
\n" ); document.write( "y=-x/2+7/2
\n" ); document.write( "y=-x/2+7/2 (green line)
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+4x%2F5+-11%2F5%2C+-x%2F2+%2B7%2F2%29+\"$ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 4x/5 -11/5 and -x/2 +7/2).
\n" ); document.write( "4x-5y=11
\n" ); document.write( "x+2y=7 multiply this equation by -4 & add
\n" ); document.write( "-4x-8y=-28
\n" ); document.write( "4x-5y=11
\n" ); document.write( "----------------
\n" ); document.write( "-13y=-17
\n" ); document.write( "y=-17/-13
\n" ); document.write( "y=17/13 or 1.3 ans.
\n" ); document.write( "x+2*17/13=7
\n" ); document.write( "x+34/13=7
\n" ); document.write( "x=7-34/13
\n" ); document.write( "x=4.38 ans.
\n" ); document.write( "Intercept (4.38,1.30) \n" ); document.write( "

\n" );