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Mathematics
OpenStudy (anonymous):

What is the slope of a line perpendicular to the line with equation y = 5x – 2? A. –5 B. 5 C. 1/5 D. –2

hero (hero):

@TakeA.I.M. Do you have an idea of which answer choice is correct and why?

OpenStudy (anonymous):

Idk but im guesssing it 5

OpenStudy (tkhunny):

Perpendicular lines, as long as neither is vertical, the product of their slopes is -1 - every time!

OpenStudy (anonymous):

when you see perpendicular slope you should automatically think negative reciprocal it should be -1/5

OpenStudy (anonymous):

How though?

OpenStudy (anonymous):

How is it -1/5? How did you get the answer

OpenStudy (anonymous):

perpendicular means to flip it so you have a 5x slope right?

OpenStudy (anonymous):

yea so

OpenStudy (anonymous):

so if you flip the five it is going to be 1/5 right? and then you negate it it is just a thing you have to know i did this 2 years ago and somehow i never forgot it

OpenStudy (anonymous):

ok thnx

OpenStudy (anonymous):

so that is how i got -1/5

OpenStudy (anonymous):

i hope i explained it good enough

OpenStudy (anonymous):

Yea you did well :D

OpenStudy (anonymous):

okay great glad to hear that and next time you see a problem think negative reciprocal and you will get it every time.

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