document.write( "Question 6004: find the slope of a line that is parallel to and slope that is perpendicular to the following line: y=-3x\r
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Algebra.Com's Answer #3160 by rapaljer(4671)\"\" \"About 
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In the equation of a line in the form y=mx+b, the coefficient of x is the slope of the line. The slope of this line \"y=-3x+\" is therefore the coefficient of x, which is -3. A line parallel to this line is going in the same direction, so it also has a slope of m= -3. \r
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\n" ); document.write( "\n" ); document.write( "A line that is perpendicular to a given line has a slope that is the NEGATIVE RECIPROCAL of the slope of the given line. Therefore, the slope of a line perpendicular to \"y+=+-3x\" must have a slope that is the opposite sign AND the reciprocal of m = -3, which is \"+m+=+1%2F3\".\r
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