document.write( "Question 1011817: Find the constant s so that the lines (2s+4)x +5y=-7 (s+4)x +3y =s are parallel. Thank you. \n" ); document.write( "

Algebra.Com's Answer #627591 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "(2s+4)x +5y=-7 (s+4)x +3y =s\r\n" );
document.write( "\r\n" );
document.write( "We get both equations in slope-intercept form y = mx+b\r\n" );
document.write( "\r\n" );
document.write( "We do that by solving the equation for y:\r\n" );
document.write( "\r\n" );
document.write( "The first one in slope-intercept form is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The second one in slope-intercept form is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Compare both to y = mx + b\r\n" );
document.write( "\r\n" );
document.write( "and their slopes are the coefficients of x.\r\n" );
document.write( "\r\n" );
document.write( "So we set the two slopes equal to each other:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Solve that for s. Begin by clearing of fractions\r\n" );
document.write( "by multiplying both sides by LCD = 15.\r\n" );
document.write( "\r\n" );
document.write( "The answer is a positive whole number.\r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );