Complete the equation of the graphed linear function in point-slope form.
y – 8 = (x – )
The graph of the function goes through point 2, 8 and point 6, 0.
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OpenStudy (vickyisthesmartone123):
HELP PLEASE
OpenStudy (vickyisthesmartone123):
@JeruDavis @Crazy_questions
OpenStudy (jerudavis):
idk
OpenStudy (vickyisthesmartone123):
@imqwerty
OpenStudy (vickyisthesmartone123):
@jigglypuff314
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OpenStudy (vickyisthesmartone123):
@mathstudent55
OpenStudy (vickyisthesmartone123):
@phi
OpenStudy (vickyisthesmartone123):
@Hero
OpenStudy (vickyisthesmartone123):
@King.Void.
OpenStudy (vickyisthesmartone123):
Help 8th grade math
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OpenStudy (en):
so the first point is (2,8)?
OpenStudy (vickyisthesmartone123):
@zepdrix
OpenStudy (vickyisthesmartone123):
No ignore the bottom part and focus on the picture the bottom was nonsense
jigglypuff314 (jigglypuff314):
point slope form is
\( y - k = m(x - h) \)
when given that the slope is \(m\)
and given a point \( (h, k)\)
OpenStudy (en):
im trying to find the slop :(
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OpenStudy (en):
*slope
OpenStudy (vickyisthesmartone123):
That's the problem can someone guide me on how to find the slope?
OpenStudy (vickyisthesmartone123):
Like tell me the equations part by part and I'll answer it
jigglypuff314 (jigglypuff314):
they want us to assume that the given point for our equation should be \( (2,8)\)
because they already filled in the 8 for us
do you understand this? @Vickyisthesmartone123
OpenStudy (vickyisthesmartone123):
Yeah, that's basically what I only understand... :)
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jigglypuff314 (jigglypuff314):
good :)
now, you can figure out the slope with this idea:
\(slope = \huge \frac{y_2 - y_1}{x_2 - x_1} \)
if we have two points (x1, y1) and (x2, y2)
which in this case can be (2,8) and (6, 0)
OpenStudy (en):
@jigglypuff314 thats it :)
OpenStudy (vickyisthesmartone123):
So...It would look like this
0-8
-----
6-2
Yeah??? :\
jigglypuff314 (jigglypuff314):
exactly! :D
now can you simplify that into a fraction? :)
OpenStudy (vickyisthesmartone123):
Umm...I think so yeah...
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OpenStudy (vickyisthesmartone123):
So it would be
-8
----
4
OpenStudy (vickyisthesmartone123):
@jigglypuff314 You there?
jigglypuff314 (jigglypuff314):
I think you can simplify that even more :)
OpenStudy (vickyisthesmartone123):
Oh ok
-2
---
1
Therefor, -2
OpenStudy (vickyisthesmartone123):
*Therefore
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jigglypuff314 (jigglypuff314):
there you go, you got your slope ^_^
OpenStudy (vickyisthesmartone123):
Ok so -2 is my slope.
Is that it or no?
jigglypuff314 (jigglypuff314):
correct :)
OpenStudy (vickyisthesmartone123):
That's it?
OpenStudy (vickyisthesmartone123):
I have too fill in 2 numbers
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jigglypuff314 (jigglypuff314):
indeed
you would also have to plug in the x value of the point (2)
behind the x ;)
OpenStudy (vickyisthesmartone123):
You see
OpenStudy (vickyisthesmartone123):
-2 is my slope but whats the other part of it?
jigglypuff314 (jigglypuff314):
(2,8)
if the 8 when after the y
what number would go after the x
in the equation? :)
OpenStudy (vickyisthesmartone123):
6?
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jigglypuff314 (jigglypuff314):
look at what I said ^
OpenStudy (vickyisthesmartone123):
2? because the thing has opposite of it
and on the (x-2)
But on the other side it would be 2 right?
jigglypuff314 (jigglypuff314):
exactly! :D
OpenStudy (vickyisthesmartone123):
Ok so the answer is
y – 8 = 2(x –2 )
jigglypuff314 (jigglypuff314):
what's the slope again?
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OpenStudy (vickyisthesmartone123):
-2
jigglypuff314 (jigglypuff314):
mhmm so what's your answer again? :)
OpenStudy (vickyisthesmartone123):
y – 8 = 2(x –2 )
Or is it switched
y-8=-2(x-2)
OpenStudy (vickyisthesmartone123):
Yes?
OpenStudy (vickyisthesmartone123):
:)
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jigglypuff314 (jigglypuff314):
the second one is correct ^_^
OpenStudy (vickyisthesmartone123):
Ok thank you!
I have something else very quick
My answer was
y = 0.8x + 4
am i right?
OpenStudy (vickyisthesmartone123):
@jigglypuff314 You there?
OpenStudy (vickyisthesmartone123):
JIGGLY?????!!!!!
:(
jigglypuff314 (jigglypuff314):
there is no weird opposite things in the slope intercept form
y = mx + b
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OpenStudy (vickyisthesmartone123):
Is it correct?
jigglypuff314 (jigglypuff314):
so both the slope and the y-intercept should be negative
otherwise the numbers are correct :)
OpenStudy (vickyisthesmartone123):
THANKS FOR HELPING ME @jigglypuff314
:D
OpenStudy (vickyisthesmartone123):
I already send my homework in.
I submit it and got 80% WOO!
Thank you! ;)