document.write( "Question 1049957: Find K so that the line through (4,4) and (k,8) is
\n" ); document.write( "A) parallel to 3y-4x=8
\n" ); document.write( "B) perpenidcular to 4y+5x=3
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Algebra.Com's Answer #665552 by josmiceli(19441)\"\" \"About 
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(A)
\n" ); document.write( "\"+3y+-+4x+=+8+\"
\n" ); document.write( "\"+3y+=+4x+%2B+8+\"
\n" ); document.write( "\"+y+=+%284%2F3%29%2Ax+%2B+8%2F3+\"
\n" ); document.write( "------------------------
\n" ); document.write( "The slope of the line through
\n" ); document.write( "( 4,4 ) and ( k,8 ) is:
\n" ); document.write( "\"+m+=+%28+8+-+4+%29+%2F+%28+k+-+4+%29+\"
\n" ); document.write( "\"+m+=+4+%2F+%28+k+-+4+%29+\"
\n" ); document.write( "----------------------------
\n" ); document.write( "A line parallel to the given line
\n" ); document.write( "will have the same slope
\n" ); document.write( "\"+4+%2F+%28+k-4+%29+=+4%2F3+\"
\n" ); document.write( "\"+k+-+4+=+3+\"
\n" ); document.write( "\"+k+=+7+\"
\n" ); document.write( "----------------------
\n" ); document.write( "----------------------
\n" ); document.write( "(B)
\n" ); document.write( "\"+4y+%2B+5x+=+3+\"
\n" ); document.write( "\"+4y+=+-5x+%2B+3+\"
\n" ); document.write( "\"+y+=+-%285%2F4%29%2Ax+%2B+3%2F4+\"
\n" ); document.write( "\"+m%5B1%5D+=+-%285%2F4%29+\"
\n" ); document.write( "Any line perpendicular to this line
\n" ); document.write( "will have slope:
\n" ); document.write( "\"+m%5B2%5D+=+-1%2Fm%5B1%5D+\"
\n" ); document.write( "\"+m%5B2%5D+=+-1%2F%28-%285%2F4%29%29+\"
\n" ); document.write( "\"+m%5B2%5D+=+4%2F5+\"
\n" ); document.write( "\"+4%2F%28+k-4+%29+=+4%2F5+\"
\n" ); document.write( "\"+k+-+4+=+5+\"
\n" ); document.write( "\"+k+=+9+\"\r
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