document.write( "Question 153216: two lines are parallel if and only if their slopes are _____________. \n" ); document.write( "
Algebra.Com's Answer #112741 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Two lines are parallel if and only if their slopes are equal. \n" ); document.write( "
\n" );