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Mathematics 23 Online
OpenStudy (anonymous):

HELP PLEASE (question is attached below as a comment) will medal and fan

OpenStudy (anonymous):

OpenStudy (anonymous):

@nincompoop

OpenStudy (nincompoop):

Alright there are a few things to know when we are describing perpendicular lines. The most important thing to know is that two lines are perpendicular if their slopes are negative reciprocal of each other.

OpenStudy (nincompoop):

Let me give you an example. line 1 \(y = 3x + 2 \) line 2 \(y = \large -\frac{1}{3}x + 4 \) line 1 and 2 are perpendicular because the slopes are a negative reciprocal of another

OpenStudy (anonymous):

so is it A?

OpenStudy (nincompoop):

in the problem that you have, it would be awesome if you convert it into y-intercept form first because it will be pretty obvious once you do it.

OpenStudy (anonymous):

i already did and i got A... is that correct

OpenStudy (anonymous):

@nincompoop

OpenStudy (anonymous):

u there? @nincompoop

OpenStudy (nincompoop):

will you show me how you determined A?

OpenStudy (anonymous):

how? my computer is not letting me draw it

OpenStudy (nincompoop):

you can type it

OpenStudy (anonymous):

i dont know how to type it out i just converted it into y-intercept form

OpenStudy (nincompoop):

that only gives you an idea of the slope tho, but how did you know that the line you picked contained the point (4, 1) ?

OpenStudy (anonymous):

im not good at english i just use google translate so i dont know how to exlain it typo

OpenStudy (nincompoop):

|dw:1439509880329:dw|

OpenStudy (nincompoop):

|dw:1439510086921:dw|

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