document.write( "Question 65153: How do I slove x+Y=-1 and 2x-y=-8
\n" ); document.write( "The problem says Find the Solution to the system by graphing
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Algebra.Com's Answer #45645 by stanbon(75887)\"\" \"About 
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How do I solve x+y=-1 and 2x-y=-8
\n" ); document.write( "The problem says Find the Solution to the system by graphing
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\n" ); document.write( "Put both equations in slope-intercept form:
\n" ); document.write( "y=-(x)-1
\n" ); document.write( "This has a y-intercept of (0,-1) and a slope of -1
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\n" ); document.write( "y=2x+8
\n" ); document.write( "This has a y-intercept of (0,8) and a slope of 2
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\n" ); document.write( "\"graph%28600%2C400%2C-10%2C10%2C-10%2C10%2C-x-1%2C2x%2B8%29\"
\n" ); document.write( "Where do these line intersect?
\n" ); document.write( "Where they intersect the y-values are equal.
\n" ); document.write( "So, write -x-1=2x+8
\n" ); document.write( "3x=-9
\n" ); document.write( "x=-3
\n" ); document.write( "Substitute to find y, as follows:
\n" ); document.write( "y=2x+8
\n" ); document.write( "y=2(-3)+8
\n" ); document.write( "y=2
\n" ); document.write( "The point of intersection is (-3,2)
\n" ); document.write( "Cheers
\n" ); document.write( "Stan H. \n" ); document.write( "
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