document.write( "Question 111443: Tell whether the line that passes through the two given points is parallel or perpendicular or neither to a line with a slope of -2.\r
\n" ); document.write( "\n" ); document.write( "(5,3),(7,-1)
\n" ); document.write( "(5,3),(7,-3)
\n" ); document.write( "(5,3),(7,4)
\n" ); document.write( "

Algebra.Com's Answer #81334 by elima(1433)\"\" \"About 
You can put this solution on YOUR website!
Tell whether the line that passes through the two given points is parallel or perpendicular or neither to a line with a slope of -2.\r
\n" ); document.write( "\n" ); document.write( "(5,3),(7,-1)
\n" ); document.write( "(5,3),(7,-3)
\n" ); document.write( "(5,3),(7,4)
\n" ); document.write( "==================================
\n" ); document.write( "Parallel lines have the same slope
\n" ); document.write( "Perpendicular lines have negative reciprocal slope
\n" ); document.write( "========================================================
\n" ); document.write( "Use the point-slope formula;
\n" ); document.write( "\"m=%28Y2-Y1%29%2F%28X2-X1%29\"
\n" ); document.write( "\"m=%28-1-3%29%2F%287-5%29\"
\n" ); document.write( "\"m=-4%2F2=-2\"
\n" ); document.write( "Same slope, line is parallel
\n" ); document.write( "--------------------------------------
\n" ); document.write( "\"m=%28-3-3%29%2F%287-5%29\"
\n" ); document.write( "\"m=-6%2F2=-3\"
\n" ); document.write( "neither
\n" ); document.write( "-----------------------------------
\n" ); document.write( "\"m=%284-3%29%2F%287-5%29\"
\n" ); document.write( "\"m=1%2F2\"
\n" ); document.write( "Negative reciprocal of -2, so line is perpendicular
\n" ); document.write( ":)
\n" ); document.write( "
\n" ); document.write( "
\n" );