document.write( "Question 436896: How would I solve this problem?\r
\n" ); document.write( "\n" ); document.write( "Graph the equations of the system. Then solve the system to find the points of intersection.\r
\n" ); document.write( "\n" ); document.write( "y = x to the power of 2 - 6x + 9
\n" ); document.write( "y = -x + 3\r
\n" ); document.write( "\n" ); document.write( "Do I need to find the intersections first before I can graph?\r
\n" ); document.write( "\n" ); document.write( "Thank you very much for your help.
\n" ); document.write( "

Algebra.Com's Answer #302246 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\"y+=+x%5E2+-+6x+%2B+9\"
\n" ); document.write( "\"y+=+-x+%2B+3\"\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2+-+6x+%2B+9%2C+-x+%2B+3%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "as you can see from the graph, intersections are at :
\n" ); document.write( "(2,1) and (3,0)\r
\n" ); document.write( "\n" ); document.write( "let's check it:\r
\n" ); document.write( "\n" ); document.write( "\"y+=+x%5E2+-+6x+%2B+9\"...substitute \"y\" with \"-x+%2B+3\"\r
\n" ); document.write( "\n" ); document.write( "\"-x+%2B+3+=+x%5E2+-+6x+%2B+9\"\r
\n" ); document.write( "\n" ); document.write( "\"+x%5E2+-+6x+%2Bx+-+3+%2B+9=0\"\r
\n" ); document.write( "\n" ); document.write( "\"+x%5E2+-+5x+%2B+6=0\".use quadratic formula\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%28-5%29+%2B-+sqrt%28%28-5%29%5E2-4%2A1%2A6+%29%29%2F%282%2A1%29+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%285+%2B-+sqrt%2825-24+%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%285+%2B-+sqrt%281%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%285+%2B-+1%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%285+%2B1%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+6%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+3+\".......one solution\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%285+-1%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+4%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+2+\".......another solution\r
\n" ); document.write( "\n" ); document.write( "now find \"y\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+-x+%2B+3\".......if \"x+=+3+\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+-3+%2B+3\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+0\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+-x+%2B+3\".......if \"x+=+2+\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+-2+%2B+3\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=1\"\r
\n" ); document.write( "\n" ); document.write( "so, you get points (3,0) and (2,1) as seen on a graph\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );