document.write( "Question 243188: need to solve by graphing:
\n" );
document.write( "x-y=2
\n" );
document.write( "x+y=-4
\n" );
document.write( "I know this sounds basic -- but been out of school and for some reason, i can't graph or figure this out!
\n" );
document.write( "thanks so much \n" );
document.write( "
Algebra.Com's Answer #178209 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! solve by graphing: \n" ); document.write( "x-y=2 \n" ); document.write( "x+y=-4 \n" ); document.write( "---------- \n" ); document.write( "Each eqn is a straight. 2 points is sufficient to plot a straight line. \n" ); document.write( "x-y=2 \n" ); document.write( "x = y+2 \n" ); document.write( "Pick values for y and find x \n" ); document.write( "y...x \n" ); document.write( "0...2 --> (2,0) \n" ); document.write( "4...6 --> (6,4) \n" ); document.write( "Plot the 2 points and draw a line thru them. \n" ); document.write( "------------- \n" ); document.write( "x+y=-4 \n" ); document.write( "y = -x-4 \n" ); document.write( "x...y \n" ); document.write( "0...-4 --> (0,-4) \n" ); document.write( "4...0 ---> (4,0) \n" ); document.write( "Draw a line thru the points. \n" ); document.write( "Where they intersect is the solution. \n" ); document.write( " |