document.write( "Question 114281: im having trouble understanding the systems of equations.....
\n" ); document.write( "how do i solve by graphing?? for ex: y=x+2, y=-x+4?? i dont understand how to solve then graph it......!!!! \n" ); document.write( "

Algebra.Com's Answer #83167 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
First you draw the two lines.
\n" ); document.write( "Where the lines intersect, the (x,y)point is a solution to the system of equations.
\n" ); document.write( "If the lines never intersect (that is, are parallel) then there is no solution.
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+x%2B2%2C+4-x%29+\"$
\n" ); document.write( "From the graph it looks like (1,3) is a solution to both equations.
\n" ); document.write( "Verify by substituting into each equation.
\n" ); document.write( "1. $\"y=x%2B2\"$
\n" ); document.write( " $\"3=1%2B2\"$
\n" ); document.write( " $\"3=3\"$
\n" ); document.write( "True statement
\n" ); document.write( "2. $\"y=-x%2B4\"$
\n" ); document.write( " $\"3=-1%2B4\"$
\n" ); document.write( " $\"3=3\"$
\n" ); document.write( "True statement
\n" ); document.write( "Your solution led to true statements from both equations.
\n" ); document.write( "Therefore it is a good solution.
\n" ); document.write( " \n" ); document.write( "

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