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Mathematics 14 Online
OpenStudy (anonymous):

graph help finding missing point

OpenStudy (anonymous):

the slope is -(1/3) point a (-2,7) point b (x,2)

OpenStudy (anonymous):

how to find x?

OpenStudy (daniee_bruhh):

Hello! I'm not really sure HOW to do this but I think I can help! :3

OpenStudy (anonymous):

please do, dying here

OpenStudy (daniee_bruhh):

First we need to use the FORMULA!! :D\[m=\frac{ y _{2}-y _{1} }{ x _{2} -x _{1}}\]

OpenStudy (daniee_bruhh):

Next we need to plug it in!!|dw:1457474744858:dw|

OpenStudy (daniee_bruhh):

Okay so now here's where the work comes in. What is -2 minus 2?

OpenStudy (anonymous):

let me just intrude here

OpenStudy (daniee_bruhh):

Okay!

OpenStudy (anonymous):

y1 is not x

OpenStudy (daniee_bruhh):

lol Bruh I'm just following this formula and how they have this set up. http://www.umsl.edu/~defreeseca/intalg/ch3extra/slope.htm

OpenStudy (daniee_bruhh):

It's there so we can find the missing Y coordinate.

OpenStudy (daniee_bruhh):

So! What does this equal? \[-2-2=?\]

OpenStudy (daniee_bruhh):

The answer is -4... So we need to plug that in there.|dw:1457475246704:dw|

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