document.write( "Question 390001: Can you help me solve this problem please.\r
\n" ); document.write( "\n" ); document.write( "The length of the line segment that joins two points whose coordinates are (4,-1) and (7,5) is
\n" ); document.write( "

Algebra.Com's Answer #276469 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "Note: is the first point . So this means that \"x%5B1%5D=4\" and \"y%5B1%5D=-1\".\r
\n" ); document.write( "\n" ); document.write( "Also, is the second point . So this means that \"x%5B2%5D=7\" and \"y%5B2%5D=5\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29\" Start with the distance formula.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%284-7%29%5E2%2B%28-1-5%29%5E2%29\" Plug in \"x%5B1%5D=4\", \"x%5B2%5D=7\", \"y%5B1%5D=-1\", and \"y%5B2%5D=5\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28-3%29%5E2%2B%28-1-5%29%5E2%29\" Subtract \"7\" from \"4\" to get \"-3\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28-3%29%5E2%2B%28-6%29%5E2%29\" Subtract \"5\" from \"-1\" to get \"-6\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%289%2B%28-6%29%5E2%29\" Square \"-3\" to get \"9\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%289%2B36%29\" Square \"-6\" to get \"36\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=sqrt%2845%29\" Add \"9\" to \"36\" to get \"45\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d=3%2Asqrt%285%29\" Simplify the square root.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So our answer is \"d=3%2Asqrt%285%29\" \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Which approximates to \"d=6.708\" \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the distance between the two points is approximately 6.708 units. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the length of the line segment is approximately 6.708 units.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Also, feel free to check out my tutoring website\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Jim
\n" ); document.write( "
\n" );