Mathematics
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OpenStudy (anonymous):
What is an equation of the line, in point-slope form, that passes through the given point and has the given slope?
point: (8, -8); slope: 3.
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OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (anonymous):
@DDS
jimthompson5910 (jim_thompson5910):
point slope form is
y-y1 = m(x-x1)
jimthompson5910 (jim_thompson5910):
m is the slope
(x1,y1) is the given point
OpenStudy (anonymous):
IS it y- 8 =3 (x+8)?
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jimthompson5910 (jim_thompson5910):
notice how it's y-y1
if y1 is -8, then
y-y1
y-(-8)
y+8
see how this works?
OpenStudy (anonymous):
Yeah. So, am I wrong or right?
jimthompson5910 (jim_thompson5910):
look above and you tell me
OpenStudy (anonymous):
right?
jimthompson5910 (jim_thompson5910):
you said "IS it y- 8 =3 (x+8)"
but I said "notice how it's y-y1..." (see the post above)
you'll see the difference
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OpenStudy (anonymous):
can you just tell me if it's right or wrong..? -_-
jimthompson5910 (jim_thompson5910):
it's wrong, do you see how?
OpenStudy (anonymous):
no.
jimthompson5910 (jim_thompson5910):
look at how I got y+8
you got y-8
OpenStudy (anonymous):
so, thats the only difference?
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jimthompson5910 (jim_thompson5910):
no there is one more
jimthompson5910 (jim_thompson5910):
it has to do with the x-x1 term
OpenStudy (anonymous):
IT WOULD BE X-8?
jimthompson5910 (jim_thompson5910):
better
OpenStudy (anonymous):
Is it y+8=3(x-8)?
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jimthompson5910 (jim_thompson5910):
yes it is