Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Which way! Negative slopes, - etc
Yttrium2
Perpetual Question Machine
*****




Posts: 1104
Registered: 7-2-2015
Member Is Offline


[*] posted on 17-2-2023 at 17:01
Which way! Negative slopes, - etc




IMG_20230217_170101209.jpg - 3.1MB


I guess Negative Rise and Negative run should be self explanatory, -- but what about in the case wherein the negative sign is in between? (As shown in my second problem involving placement of the negative symbol)

[Edited on 2/18/2023 by Yttrium2]
View user's profile Visit user's homepage View All Posts By User
Sulaiman
International Hazard
*****




Posts: 3508
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline


[*] posted on 17-2-2023 at 19:19


-(5.x/6) = -5.x/6 = 5.x/-6 ... all equivalent



CAUTION : Hobby Chemist, not Professional or even Amateur
View user's profile View All Posts By User
Yttrium2
Perpetual Question Machine
*****




Posts: 1104
Registered: 7-2-2015
Member Is Offline


[*] posted on 17-2-2023 at 19:25


Quote: Originally posted by Sulaiman  
-(5.x/6) = -5.x/6 = 5.x/-6 ... all equivalent


Nice...

But I saw this, right where the cursor - (which is where it was talking -3/4 or 3/-4 is is what i'm describing. -- part of the statement is cut off.


Here it is saying depending on where the negative sign is placed, -- it will change the direction of the rise / run.



Screenshot (39).png - 190kB

[Edited on 2/18/2023 by Yttrium2]

[Edited on 2/18/2023 by Yttrium2]
View user's profile Visit user's homepage View All Posts By User
violet sin
International Hazard
*****




Posts: 1474
Registered: 2-9-2012
Location: Daydreaming of uraninite...
Member Is Offline

Mood: Good

[*] posted on 17-2-2023 at 20:34


You can factor out a -1 and x
-5X/6 = -(5x/6) but that also looks like -1(5x/6) and = -1(5/6)(x)
Y=mx + b
Y = (-1)(5/6)(x) + 5

It's saying all three reverse the sign equally.

If you have a neg in top and bottom they cancel out. If it's just in the top or just the bottom you've got a neg slope, likewise if it's out front it's neg.

-1(3/4) = (-1/1)(3/4) = (1/-1)(3/4) = -0.75

[Edited on 18-2-2023 by violet sin]
View user's profile View All Posts By User
Yttrium2
Perpetual Question Machine
*****




Posts: 1104
Registered: 7-2-2015
Member Is Offline


[*] posted on 17-2-2023 at 20:45


the last snapshot states the position of the negative sign changes the graph
to elaborate, in my original post, I'm wondering how each of these would be graphed. Apparently there is a difference.

[Edited on 2/18/2023 by Yttrium2]
View user's profile Visit user's homepage View All Posts By User
mayko
International Hazard
*****




Posts: 1218
Registered: 17-1-2013
Location: Carrboro, NC
Member Is Offline

Mood: anomalous (Euclid class)

[*] posted on 17-2-2023 at 21:44


I think what the site is saying is, you can draw the line two ways: in the direction of increasing x (ie, left to right) or in the direction of decreasing x (right to left).

In the first case, a line with a negative slope will go downwards. In your example, the line will go down five units for every six units you move right.

In the second case, a line with a negative slope will go upwards. In your example, the line will go up five units for every six units you move (edit)left.

But whether you draw it left to right or right to left, it's still the same line.

[Edited on 18-2-2023 by mayko]




al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
View user's profile Visit user's homepage View All Posts By User
Yttrium2
Perpetual Question Machine
*****




Posts: 1104
Registered: 7-2-2015
Member Is Offline


[*] posted on 18-2-2023 at 12:40


Thanks everybody
It is infact the same line!



[Edited on 2/18/2023 by Yttrium2]

IMG_20230218_123541987.jpg - 3MB
View user's profile Visit user's homepage View All Posts By User
Yttrium2
Perpetual Question Machine
*****




Posts: 1104
Registered: 7-2-2015
Member Is Offline


[*] posted on 18-2-2023 at 12:52


Just out of curiosity, are the equations the same?



(Intuition, tells me yes, but what is changing the placement of the negative sign if not differences in the equation?)
View user's profile Visit user's homepage View All Posts By User

  Go To Top