document.write( "Question 23700: Directions:solve each system of linear equations by graphing.
\n" ); document.write( "3x-y= 7
\n" ); document.write( "y+3x-7
\n" ); document.write( "Can you explain how to do it. \n" ); document.write( "
Algebra.Com's Answer #12464 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
There is no equal sign in the second equation, so it can't be graphed. I'll take a guess, but you may need to re-post the question.\r
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\n" ); document.write( "\n" ); document.write( "3x-y = 7 is in standard form, so use the two intercepts method to graph it.
\n" ); document.write( "Let x =0, then -y = 7, so y =-7
\n" ); document.write( "Let y =0, then 3x = 7, so x= \"7%2F3\" or approximately 2.3\r
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\n" ); document.write( "\n" ); document.write( "I'll take a guess that the second equation was supposed to be y =3x - 7. This is in slope-intercept form, so the y-intercept is -7, and the slope is 3/1. \r
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\n" ); document.write( "\n" ); document.write( "Graph these two lines and it should look like this:\r
\n" ); document.write( "\n" ); document.write( "\"graph+%28400%2C400%2C+-10%2C10%2C-10%2C10%2C+3x-7%2C+3x-7%29\"\r
\n" ); document.write( "\n" ); document.write( "As you can see from this graph, the two lines are actually the same line. The solution is the entire line. There are infinitely many solutions.\r
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\n" ); document.write( "\n" ); document.write( "R^2 at SCC
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