SOLUTION: find the slope a line perpendicular to y=1/4x-5

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Question 166343: find the slope
a line perpendicular to y=1/4x-5
Answer by jim_thompson5910(35256) About Me  (Show Source):
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Remember, perpendicular lines have slopes that are inverse reciprocals of one another. So in this case, the slope of the given line is m=1%2F4. Flip the fraction and change the sign to get -4%2F1 or just -4. So the slope of a line perpendicular to the given line y=%281%2F4%29x-5 is m=-4