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Mathematics 9 Online
OpenStudy (anonymous):

Help please :( The equation of line AB is (y-3)=5(x-4). What is the slope of a line perpendicular to line AB?

OpenStudy (welshfella):

if the slope of a line is m then the slope of a line perpendicular to it is -1/m

OpenStudy (anonymous):

So it's -1/5?

OpenStudy (welshfella):

yes

OpenStudy (anonymous):

Thank you so much!

OpenStudy (welshfella):

yw

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