document.write( "Question 1183172: Find an equation of the line through the point (2, -4) with slope -1/3\r
\n" ); document.write( "\n" ); document.write( "Find an equation of the line through (2, -7) and parallel to x+3=8\r
\n" ); document.write( "\n" ); document.write( "Find the equation of the line that passes through the point (4, 6) and is perpendicular to the line x=-4 \n" ); document.write( "
Algebra.Com's Answer #813353 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "\r\n" );
document.write( "Find an equation of the line through the point (2,  -4) with slope -1/3\r\n" );
document.write( "\r\n" );
document.write( "Use the point-slope formula:\r\n" );
document.write( "\r\n" );
document.write( "\"y+-+y%5B1%5D+=+m%28x+-+x%5B1%5D%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+-+%28-4%29+=+expr%28-1%2F3%29%28x+-+%282%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+%2B+4+=+expr%28-1%2F3%29%28x+-+2%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+%2B+4+=+expr%28-1%2F3%29x+%2B+2%2F3\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+=+expr%28-1%2F3%29x+%2B+2%2F3+-+4\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+=+expr%28-1%2F3%29x+%2B+2%2F3+-+12%2F3\"\r\n" );
document.write( "\r\n" );
document.write( "\"y+=+expr%28-1%2F3%29x+-+10%2F3\"\r\n" );
document.write( "\r\n" );
document.write( "----------------------------\r\n" );
document.write( "\r\n" );
document.write( "Find an equation of the line through (2,  -7) and parallel to x+3=8\r\n" );
document.write( "\r\n" );
document.write( "x+3=8 which simplifies to\r\n" );
document.write( "  x=5 is a vertical line with no slope, so we need another vertical\r\n" );
document.write( "line passing through (2,-7) which is just x = [the x-coordinate of (2,-7)]\r\n" );
document.write( "\r\n" );
document.write( "Answer: x = 2\r\n" );
document.write( "\r\n" );
document.write( "---------------------------------\r\n" );
document.write( "\r\n" );
document.write( "Find the equation of the line that passes through the point (4, 6) and is perpendicular to the line x=-4 \r\n" );
document.write( "\r\n" );
document.write( "x=-4 is a vertical line with no slope, so we just need a horizontal\r\n" );
document.write( "line passing through (4,6) which is just y=the y-coordinate of (4,6)\r\n" );
document.write( "\r\n" );
document.write( "Answer: y = 6\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );