document.write( "Question 136729This question is from textbook The Shapes of Algebra, Linear System and Inequalities
\n" ); document.write( ": how do you find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn out the same as when i graphed them. \n" ); document.write( "
Algebra.Com's Answer #100091 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn out the same as when i graphed them.
\n" ); document.write( "---------------------------------
\n" ); document.write( "2x+4 = 0.5x-2
\n" ); document.write( "1.5x = -6
\n" ); document.write( "x = -4
\n" ); document.write( "------------
\n" ); document.write( "Substitute to solve for \"y\":
\n" ); document.write( "y = 2*-4+4
\n" ); document.write( "y = -4
\n" ); document.write( "--------------
\n" ); document.write( "Solution: (-4,-4)
\n" ); document.write( "\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C2x%2B4%2C0.5x-2%29\"
\n" ); document.write( "=====================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
\n" );