Mathematics
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OpenStudy (anonymous):
Find the slope of the line passing through each pair of points.
(-3, 4) and (6, 1)
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OpenStudy (shamil98):
Use the slope formula.
\[\huge \frac{ y_2 - y_1 }{ x_2 - x_1 }\]
OpenStudy (anonymous):
C o m e h e l p m e!
OpenStudy (anonymous):
4 - 1
_______
-3 - 6
^ Like this...?
OpenStudy (shamil98):
No, you got the coordinates mixed up.
try again
OpenStudy (shamil98):
it should be the second y - coordinated minus the first one
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OpenStudy (shamil98):
amd the same goes for the x coordinates
OpenStudy (anonymous):
1 - 4
_______
6 - -3
OpenStudy (shamil98):
Yep, now simplify it
OpenStudy (anonymous):
-3
___
9
OpenStudy (shamil98):
correct, and there you go -3/9 is your slope
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OpenStudy (anonymous):
it doesn't really matter which coordinate your subtracting from what btw
OpenStudy (shamil98):
yes it does.
OpenStudy (anonymous):
They gave me an answer key (without the explanation) and they said the answer is -1/3... Is that -3/9 simplified?
OpenStudy (anonymous):
it does not matter.
OpenStudy (shamil98):
yes that is
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OpenStudy (shamil98):
Why do you think there is formula for it?
OpenStudy (shamil98):
You're mislead..
OpenStudy (anonymous):
(1)-(4)/(6)-(-3) = -3/9
(4)-(1)/(-3)-(6) = -3/9
clearly, i'm misled.
OpenStudy (shamil98):
You are mislead, your way won't work for every single pair of coordinates.
OpenStudy (shamil98):
Sure you get the same answer this time but in other cases you wont
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OpenStudy (anonymous):
show me a case where it wont.