document.write( "Question 326931: How many solutions exist for the lines
\n" ); document.write( "x+y=3 and y= x +3?
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Algebra.Com's Answer #234117 by solver91311(24713) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "The slope of one of the lines is -1 and the slope of the other is 1, hence the two lines are NOT parallel and must intersect in a single point somewhere. Note that both lines have a

-intercept of 3. They both intercept the

-axis in the same point. Well, if the two lines intersect in only one point and they both intersect the

-axis in the same point, the

-intercept has to be the place. Point of intersection and the single element of the solution set is

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