document.write( "Question 1130468: Write the equation of the line K that passes through the points (4,9) and (-1,-1). \n" ); document.write( "
Algebra.Com's Answer #747143 by ikleyn(52809)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "First find the slope  m = \"%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\" = \"%28%28-1%29-9%29%2F%28%28-1%29-4%29%29\" = \"%28-10%29%2F%28-5%29\" = 2.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Now an equation of the line is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    y-9 = 2*(x-4),   or\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    y - 9 = 2x - 8,\r\n" );
document.write( "\r\n" );
document.write( "    y = 2x - 8 + 9,\r\n" );
document.write( "\r\n" );
document.write( "    y = 2x + 1.      YOUR FINAL ANSWER \r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "--------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "My lessons in this site related to the slope of a straight line are\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "    - Find the slope of a straight line in a coordinate plane passing through two given points\r
\n" ); document.write( "\n" ); document.write( "    - Equation for a straight line having a given slope and passing through a given point\r
\n" ); document.write( "\n" ); document.write( "    - Solving problems related to the slope of a straight line\r
\n" ); document.write( "\n" ); document.write( "    - Equation for a straight line in a coordinate plane passing through two given points\r
\n" ); document.write( "\n" ); document.write( "    - Equation for a straight line parallel to a given line and passing through a given point\r
\n" ); document.write( "\n" ); document.write( "    - Equation for a straight line perpendicular to a given line and passing through a given point \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons related to the slope of a straight line \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );