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OpenStudy (anonymous):
Parallelogram ABCD has the coordinates:
A (1, -3)
B (1, 0)
C (4, 2)
Find the coordinates of point D.
A). (4, 0)
B). (4, -1)
C). (3, -1)
D). (5, -2)
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jimthompson5910 (jim_thompson5910):
have you started this problem at all?
OpenStudy (anonymous):
I've skipped around this one. But I think I start by finding the distance between these points? right?
jimthompson5910 (jim_thompson5910):
no need to do that really
jimthompson5910 (jim_thompson5910):
first plot the 3 points
jimthompson5910 (jim_thompson5910):
now use that graph to find the slope of BC
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jimthompson5910 (jim_thompson5910):
what is the slope of BC
OpenStudy (anonymous):
just a moment
jimthompson5910 (jim_thompson5910):
ok
OpenStudy (anonymous):
ok , I plotted them
jimthompson5910 (jim_thompson5910):
what's the slope of BC
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OpenStudy (anonymous):
is it 2/3 ?
jimthompson5910 (jim_thompson5910):
so to to from point B to C, you go up 2, then to the right 3
jimthompson5910 (jim_thompson5910):
if you started at point A, and followed that same rule (up 2, over 3), you would land on point D
jimthompson5910 (jim_thompson5910):
to go*
OpenStudy (anonymous):
so the answer is c! thanks because I was making it harder than it was.
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jimthompson5910 (jim_thompson5910):
it's not C, you miscounted somehow
OpenStudy (anonymous):
omg.
jimthompson5910 (jim_thompson5910):
silly mistake I'm sure
jimthompson5910 (jim_thompson5910):
see attached
jimthompson5910 (jim_thompson5910):
notice you start at A, go up 2, then over to the right 3 to land on (4,-1)
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OpenStudy (anonymous):
4,-1 got it. silly mistake.
jimthompson5910 (jim_thompson5910):
yeah no big deal really, but glad it's making sense (I hope?)
OpenStudy (anonymous):
It is. Theres another problem like this one I wanna make sure im doing it right.
jimthompson5910 (jim_thompson5910):
ok
OpenStudy (anonymous):
it won't let me copy & past so should I just make another question?
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jimthompson5910 (jim_thompson5910):
either way is fine
OpenStudy (anonymous):
okay. i'll make another.