document.write( "Question 32739: I would like your help to learn how to work out how to varify solutions to linear equations. I have no clue where to begin. I also don't understand how to graph systems of equations. Here's one of my problems. graph: x+2y= -10 ; -x+3y= -9. Thank you for your help. \n" ); document.write( "
Algebra.Com's Answer #19361 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! X+2Y=-10 \n" ); document.write( "-X+3Y=-9 ADDING THE TWO EQUATIONS WE GET \n" ); document.write( "-------- \n" ); document.write( "5Y=-19 OR Y=-19/5 SUBSTITUTING -19/5 FOR Y IN EQUATION 1 WE GET\r \n" ); document.write( "\n" ); document.write( "X+2(-19/5)=-10 OR X-38/5=-10 OR X=-10+38/5 OR X=(-50+38)/5 OR X=-12/5\r \n" ); document.write( "\n" ); document.write( "PROOF -(-12/5)+3(-19/5)=-9 OR 12/5-57/5=-9 OR (12-57)/5=-9 OR -45/5=-9 OR \n" ); document.write( "-9=-9 & -12/5+2(-19/5)=-10 or -12/5-38/5=-10 or (-12-38)/5=-10 or -50/5=-10 or \n" ); document.write( "-10=-10 \n" ); document.write( " |