document.write( "Question 1004002: Find the value of k for which the lines (k + 1)x – 4y + 10 = 0 and
\n" ); document.write( "y = (5/k)x + 11 are perpendicular. \n" ); document.write( "

Algebra.Com's Answer #620571 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"-4y=-%28k%2B1%29x-10\"$
\n" ); document.write( " $\"y=%28%28k%2B1%29%2F4%29x%2B10%2F4\"$
\n" ); document.write( " $\"y=%28%28k%2B1%29%2F4%29x%2B5%2F2\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now compare the coefficients on x.\r
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\n" ); document.write( "\n" ); document.write( "You want, for perpendicularity, $\"%28k%2B1%29%2F4=-k%2F5\"$ .
\n" ); document.write( "Solve. \n" ); document.write( "

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