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Mathematics 20 Online
OpenStudy (daisy.xoxo619):

1) find the slope of the altitude to seg AT 2)find the slope of a line through C parallel to set AT 3) find the slope of the median to set AT

OpenStudy (anonymous):

Slope Formula:\[m = \frac{ y_2-y_1 }{ x_2-x_1 }\]

OpenStudy (daisy.xoxo619):

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OpenStudy (anonymous):

The (x1,y1) and (x2,y2) represent the end points of the line you are using.

OpenStudy (anonymous):

For example if I want the slope of line AT then I would use points A(x1,y1) = (-7,0) and T(x2,y2) = (9,-7)

OpenStudy (daisy.xoxo619):

ok i understand that, how would I find the slope of C(4,5) to set AT(?,?) ?

OpenStudy (daisy.xoxo619):

@Johnbc

OpenStudy (daisy.xoxo619):

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OpenStudy (daisy.xoxo619):

@Miracrown

ganeshie8 (ganeshie8):

use below : slopes of perpendicular lines are opposite reciprocals

ganeshie8 (ganeshie8):

if slope of AT is \(m\), then slope of that altitude will be \(-\dfrac{1}{m}\)

ganeshie8 (ganeshie8):

so, you can simply find the slope of AT then flip it and put a negative sign

OpenStudy (daisy.xoxo619):

slope of AT= -7/16 slope altitude= 16/7 yes or no @ganeshie8

ganeshie8 (ganeshie8):

Yes !

ganeshie8 (ganeshie8):

good job :)

OpenStudy (daisy.xoxo619):

thx. how would i do this: 2)find the slope of a line through C parallel to set AT

ganeshie8 (ganeshie8):

what do you know about the slopes of parallel lines ?

OpenStudy (daisy.xoxo619):

they have the same slope

ganeshie8 (ganeshie8):

so...

OpenStudy (daisy.xoxo619):

would it be the same -- -7/16?

ganeshie8 (ganeshie8):

Correct !!

OpenStudy (daisy.xoxo619):

soo.. what about this: 3) find the slope of the median to set AT

ganeshie8 (ganeshie8):

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ganeshie8 (ganeshie8):

find the coordinates of D and apply slope formula for CD

OpenStudy (daisy.xoxo619):

is it 2.8??

OpenStudy (daisy.xoxo619):

@ganeshie8

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