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Fang02
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Can someone help me with this please? I don't know how to do this.
Write the equation for the horizontal line that contains point G(8, 8).
 2 years ago
 2 years ago
Fang02 Group Title
Can someone help me with this please? I don't know how to do this. Write the equation for the horizontal line that contains point G(8, 8).
 2 years ago
 2 years ago

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tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
Horizontal lines are of the form y=n where you may have been given a point in the form (m, n). You have such a point G.
 2 years ago

piscez.in Group TitleBest ResponseYou've already chosen the best response.0
keep in mind that a horizontal line is parallel to x axis, and slope is the value of tan of the angle between the x axis and the line
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
@piscez.in: What do you mean by the slope is the value of tan of the angle between the xaxis and the line? Specifically, what do you mean by the value of tan? @tcarroll010: Okay, just a moment please.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
So it would be something like y = 8  (8)?
 2 years ago

piscez.in Group TitleBest ResponseYou've already chosen the best response.0
@fang02 tan value as in tangent value, like sine cosine, tan etc.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Hmm..I do not believe I have learned about the tan value then.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
He means that the equation of a line in slopeintercept form, in general is y = mx + b and that here we have "0" slope, so the mx term disappears. So, we have y=b, or in my notation, y=n. You have point (8, 8) which is the same distance away from the xaxis as the "b" intercept, (0, 8), so you can simplify and use the "n".
 2 years ago

piscez.in Group TitleBest ResponseYou've already chosen the best response.0
@Fang02 oh im sorry hun, well then forget it. But try to roughly draw the line on a paper. Find the y intercept. And you must already be knowing that the slope of horizontal lines( lines parallel to x axis) is always 1
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
Not y = 8  (8). Instead, y=n where n = 8
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
So, the answer is pretty much y = 8 then? No need to be sorry pisez.in.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
Yes! You got it. Good job! It's just y=8.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Okay, thanks a lot! :) Would you mind helping me with another problem real quick?
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Write an equation in pointslope form of the line through point J(4, 1) with slope 4.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Pointslope form is y2  y1 over x2 over x1 So, I think it would be: 1  4 over something
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
pointslope form is going to be:\[y  y _{1} = m(x  x _{1})\] Here, y is y and x is x as variables. x1 and y1 are a SPECIFIC point in the form (x1, y1)
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
(x1, y1) is the point you are given that is (4, 1), so x1 is 4 and y1 is 1.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
I think that (x1, y1) would be (4, 1) right?
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Why does the 4 turn positive?
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
(x1, y1) is the point you are given that is (4, 1), so x1 is 4 and y1 is 1. It's the slope that is 4.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
I understand.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
So now, just substitute.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
y  y1 = m(x  x1) y  1 = 4 (4  4) ?
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
Not quite there yet. What happened to "x"? "x" stays as "x" just like "y" stays as "y". You only substitute for y1, x1, and m.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Oh okay. So, y = 1 = 4(x  4)
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
You still have a small typo, but you are extremely close now.
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Would I put x1 in parenthesis to show that it is positive and is just being subtracted? y = 1 = 4(x  (4))
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
You don't have to do that, you can just leave it as y  1 = 4(x  4). Notice how after the "y" I changed that from "=" to ""
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Oh okay, I understand now.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
Very nice working with you and you will get there. Just keep up the good work!
 2 years ago

Fang02 Group TitleBest ResponseYou've already chosen the best response.0
Thanks! You too! :)
 2 years ago
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