document.write( "Question 456666: I have to solve a system of equations using substitution to eliminate one variable for 4x+2y=6 and 2x+y=3. \n" ); document.write( "
Algebra.Com's Answer #313450 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! I have to solve a system of equations using substitution to eliminate one variable for 4x+2y=6 and 2x+y=3 \n" ); document.write( ".. \n" ); document.write( "2x+y=3 \n" ); document.write( "y=3-2x \n" ); document.write( ".. \n" ); document.write( "4x+2y=6 \n" ); document.write( "sub for y \n" ); document.write( "4x+2(3-2x)=6 \n" ); document.write( "4x+6-4x=6 \n" ); document.write( "0=0 \n" ); document.write( ".. \n" ); document.write( "In this case the lines coincide (same slope, same y-intercept) \n" ); document.write( "Equations are dependent and system consistent \n" ); document.write( "System has infinitely many solutions \n" ); document.write( " |