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Mikeyy1992
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Help? Please and thank you! What is the y coordinate of the y−intercept of the line that passes through the points
(−3, −1) and (1, 7)?
 11 months ago
 11 months ago
Mikeyy1992 Group Title
Help? Please and thank you! What is the y coordinate of the y−intercept of the line that passes through the points (−3, −1) and (1, 7)?
 11 months ago
 11 months ago

This Question is Closed

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
3 1 1 7dw:1377494318035:dw
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
You have to find the slope of the line!
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Slope is...\[\frac{ RISE }{ RUN }\]
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Lagging is my life.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
would that be equal to 1/2 for slope? or no?
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Right:)
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Well, what is my question asking for? the y coordinate?
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Little confused..
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Yes! To find where the line crosses the Y axes!
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
2, 0? Random guess. Lol
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
\[y – y _{1} = m(x – x _{1})\]
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Now using that formula I gave you plug in one of the Points that are given and solve for y.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
1 + 7 = m(3 + 1)
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Not exactly...Only use one set of points and plug it into the y and x with a tiny 1...
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
More like... y+1= M(x+3)
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
And M means slope so plug that in too!
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y + 1 = 1/2(x + 3)
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Yup, now solve for Y.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y = 1/2x + 1/2 ?
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Yes:)
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
This form is call slope intercept form. To find y plug in 0 for X.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y = 1/2(0) + 1/2 y = 1/2 ?
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
(0,1/2)
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Now, this will be tricky to put in the written response, because fractions turn from 1/2 to 12. Lol. Should I just put 0.5?
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Wait...before you write it lets check it...cause something doesnt seem right...
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
I feel like it should be a whole number, my teacher said it should be for these ones.
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
I think is should be (0,5)...
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
@mathstudent55 Maybe they know if we did anything wrong.
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
I figured out!
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
@Luigi0210
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
The slope is 2!
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
we have to redo that with the slope of 2.
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Because its Y/X not X/Y.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
OpenStudy is lagging for me.
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Its okay! it is (0,5)
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
\[y+1=2(x+3)\]
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
\[y=2x+5\]
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
@Luigi0210 I really need to know if he's right. I'm so confused.
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
Sorry for confusing you...:(
 11 months ago

OpenSessame Group TitleBest ResponseYou've already chosen the best response.1
http://www.webmath.com/_answer.php Its right, check...
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Only if OpenStudy was a real person...
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
So you're just looking for the ycoordinate of the y intercept?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Well you know that the yintercept is when x=0 right?
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Yes, but now I don't even know what the slope is anymore. 1/2 or 2 or 5 lol.
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Slope is: \[m=\frac{y2y1}{x2x1}\]
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
3, 1 1, 7
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
1  7  3  1 ?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Just plug them in and solve. and either way works, you get the same answer
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
8  4 ?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Yup, making the slope 2. Now we plug that information into the pointslope formula: yy1=m(xx1)
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Open was right so far, except for the slope
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y  1 = 2(x  7) ?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Yea, not just distribute.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y = 2x  13?
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Now what?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Now we find the yintercept Meaning that we plug in where ever there is an x. This will give us the y value we are looking for.
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
What do we use for x? What number?
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
0 = 2x  3?
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
13......let me type please OpenStudy please...
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Ah, plug 0 in for x, not y
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
y = 2(0)  13 y = 13?
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Yup, and that's it Mikeyy :)
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
I feel like that would be one weird yintercept from where the two dots are on a graph..
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Your ordered pair is (13, 0)
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
*(0, 13)
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Alright thanks :P
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Mikeyy..
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
Lol. Answer wasn't 13 but I still got a 88. and I have a chance to get a 90 with my written response...
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Yes I was about to say that.. sorry buddy :( I just realized that we used the wrong points for the pointslope formula.
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
The answer was actually (0, 5) and the equation was y=2x+5
 11 months ago

Mikeyy1992 Group TitleBest ResponseYou've already chosen the best response.0
It's fine. I had to get over a 60 and I did. So, I'm happy. I need to get off OP before it screws me another time. thanks again
 11 months ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.1
Alright, and you're welcome :)
 11 months ago
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