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 one year ago
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)?
 one year ago
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)?

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OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.13 1 1 7dw:1377494318035:dw

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1You have to find the slope of the line!

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Slope is...\[\frac{ RISE }{ RUN }\]

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0Lagging is my life.

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0would that be equal to 1/2 for slope? or no?

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0Well, what is my question asking for? the y coordinate?

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Yes! To find where the line crosses the Y axes!

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.02, 0? Random guess. Lol

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1\[y – y _{1} = m(x – x _{1})\]

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

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

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1More like... y+1= M(x+3)

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1And M means slope so plug that in too!

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Yup, now solve for Y.

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1This form is call slope intercept form. To find y plug in 0 for X.

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0y = 1/2(0) + 1/2 y = 1/2 ?

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0Now, 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?

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Wait...before you write it lets check it...cause something doesnt seem right...

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

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1I think is should be (0,5)...

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0@mathstudent55 Maybe they know if we did anything wrong.

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1we have to redo that with the slope of 2.

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Because its Y/X not X/Y.

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0OpenStudy is lagging for me.

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Its okay! it is (0,5)

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0@Luigi0210 I really need to know if he's right. I'm so confused.

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1Sorry for confusing you...:(

OpenSessame
 one year ago
Best ResponseYou've already chosen the best response.1http://www.webmath.com/_answer.php Its right, check...

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0Only if OpenStudy was a real person...

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1So you're just looking for the ycoordinate of the y intercept?

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Well you know that the yintercept is when x=0 right?

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

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Slope is: \[m=\frac{y2y1}{x2x1}\]

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.01  7  3  1 ?

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Just plug them in and solve. and either way works, you get the same answer

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

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Open was right so far, except for the slope

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Yea, not just distribute.

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Now 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.

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0What do we use for x? What number?

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.013......let me type please OpenStudy please...

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Ah, plug 0 in for x, not y

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0y = 2(0)  13 y = 13?

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Yup, and that's it Mikeyy :)

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

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Your ordered pair is (13, 0)

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

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

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

Mikeyy1992
 one year ago
Best ResponseYou've already chosen the best response.0It'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

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Alright, and you're welcome :)
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