SOLUTION: Hello, I have a question on finding the slope of a line that is perpendicular to the line y=4/9x-12 Thank you so much for the help. -Kaitlin

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Question 484889: Hello, I have a question on finding the slope of a line that is perpendicular to the line y=4/9x-12
Thank you so much for the help.
-Kaitlin

Found 2 solutions by nerdybill, MathLover1:
Answer by nerdybill(7384)   (Show Source): You can put this solution on YOUR website!
Slope of:
y=4/9x-12
is 4/9
a line perpendicular to this must have a slope that is the "negative reciprocal":
Let m = new slope
then
(4/9)m = -1
4m = -9
m = -9/4
Answer: -9/4

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
..as you can see, this line has a
by definition, perpendicular lines have opposite reciprocal slopes
so, a of a line that is perpendicular to the given line will be:



.......this is a line that is perpendicular to the given line

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