document.write( "Question 214181: Need help in this problem?\r
\n" );
document.write( "\n" );
document.write( " Is (-2,-2) a solution of the system\r
\n" );
document.write( "\n" );
document.write( " x-3y=4
\n" );
document.write( " 3x+y=-8 \n" );
document.write( "
Algebra.Com's Answer #161766 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Simply plug in x=-2 and y=-2 into both equations and simplify. If you get two identities, then (-2,-2) is the solution. If one is not (or both aren't) an identity, then (-2,-2) is NOT the solution.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Note: an identity is an equation that is ALWAYS true. A simple identity is 0=0. \n" ); document.write( " |