document.write( "Question 1151416: If the line represented by the equation 4x+ky-10=0 is parallel to the line with equation 2x-10y+7=0, what is the value of k? \n" ); document.write( "

Algebra.Com's Answer #773161 by ikleyn(52906) $\"\"$ $\"About$

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\n" ); document.write( "If the line represented by the equation 4x+ky-10=0 is parallel to the line with equation 2x-10y+7=0, what is the value of k?
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\n" ); document.write( "\n" ); document.write( "            The response by @MathLover1 is written as if the question is about PERPENDICULAR lines;
\n" ); document.write( "            but it is about PARALLEL lines.\r
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\n" ); document.write( "\n" ); document.write( "            So I came to fix it.\r
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document.write( "The lines are parallel if and only if their slopes are equal.\r\n" );
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document.write( "It gives you this equation / (proportion)\r\n" );
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document.write( "     = .\r\n" );
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document.write( "Left side of this equation is the slope of the first line;\r\n" );
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document.write( "respectively, right side of the equation is the slope of the second line.\r\n" );
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document.write( "From this proportion,  k =  = -20.    ANSWER\r\n" );
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