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Mathematics 20 Online
zarkam21 (zarkam21):

Is this correct?

zarkam21 (zarkam21):

OpenStudy (jh99):

APexxx

OpenStudy (kinged):

Always -1

OpenStudy (agent0smith):

It isn't. Show your work though

OpenStudy (greenbannanabob):

Perpendicular lines are always the opposite reciprocal of the original line. So if the original line is 5, what is the opposite reciprocal of 5?

OpenStudy (jh99):

Shouldn't it be -1?

zarkam21 (zarkam21):

Ohhh yeah negative because perpendicular lines are always negative reciprocals right?

OpenStudy (jh99):

If it is perpendicular, it is the NEGATIVE reciprocals!

OpenStudy (greenbannanabob):

Yeah, if you think about it a number times the opposite reciprocal would be -1. \[x \times(-1/x)=-x/x=-1\]

zarkam21 (zarkam21):

The lines below are perpendicular. If the green line has a slope of \[-\frac{ 2 }{ 3 }\] what is the slope of the other line

zarkam21 (zarkam21):

What about this ,, this would be -3/2? or just 3-2

OpenStudy (agent0smith):

What is the negative reciprocal of that slope?

OpenStudy (greenbannanabob):

you have to flip the sign and the fraction

zarkam21 (zarkam21):

so just 3/2

OpenStudy (greenbannanabob):

Yeah

zarkam21 (zarkam21):

Right @agent0smith

OpenStudy (agent0smith):

Yep.

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