Mathematics
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OpenStudy (keeli_grace):
What is the slope of the line passing through points A and B?
A. 1/2
B. -1/2
C. 2
D. -2
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OpenStudy (anonymous):
What are the coordinates of A and B?
OpenStudy (keeli_grace):
OpenStudy (keeli_grace):
@emcrazy14
OpenStudy (anonymous):
Okay, I'll tell you the formula. You will plug in the values, yourself, okay? And I'll check your answer.
OpenStudy (keeli_grace):
Okay. :)
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OpenStudy (anonymous):
\[slope= \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} } \]
OpenStudy (anonymous):
x1 and y1 are the coordinates of one pair like e.g A.
x2 and y2 are the coordinates of the other, that is, B.
OpenStudy (keeli_grace):
I don't understand. : /
OpenStudy (keeli_grace):
@emcrazy14 ? Would you please explain how I would apply said formula?
OpenStudy (anonymous):
Okay, so x-coordinate of A is -3 and y-coordinate is 4. Agreed?
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OpenStudy (anonymous):
x-coordinate of B is 1 and y-coordinate is 2.
OpenStudy (anonymous):
Now plug in the formula.
\[slope= \frac{ 4-2 }{ -3-1 }\]
OpenStudy (anonymous):
Did you get it now?
OpenStudy (keeli_grace):
So it would be 2/-4?
OpenStudy (anonymous):
Which would be -1/2 when simplified.
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OpenStudy (keeli_grace):
OH!!!!! Thank you so much!!! :D
OpenStudy (anonymous):
yw. (: