# Gradients and the sort =[

• Dec 3rd 2007, 08:51 PM
Hikaru
Heya! =]

I need help with a fairly easy maths assignment. I can't find my textbook, so I'm not sure how the formulas went. But I think it was a really easy process. =]

Basically, we have to find the gradients of these measurements that we took. If you guys can guide me with one of the questions, then I should be able to figure out the rest for myself. =]

Okay, so for one measurement, I took a measurement of 13cm vertically. And a measurement of 100cm horizontally. I should be able to find the gradient from those two, right? =[

(This is a picture of how the thing we measured looked like - Click

I -think- it went something like, y-step over x-step. So that gives me a gradient of 0.13? Is that right? (It's not isn't it. =[ )

• Dec 4th 2007, 12:01 AM
janvdl
Quote:

Originally Posted by Hikaru
Heya! =]

I need help with a fairly easy maths assignment. I can't find my textbook, so I'm not sure how the formulas went. But I think it was a really easy process. =]

Basically, we have to find the gradients of these measurements that we took. If you guys can guide me with one of the questions, then I should be able to figure out the rest for myself. =]

Okay, so for one measurement, I took a measurement of 13cm vertically. And a measurement of 100cm horizontally. I should be able to find the gradient from those two, right? =[

(This is a picture of how the thing we measured looked like - Click

I -think- it went something like, y-step over x-step. So that gives me a gradient of 0.13? Is that right? (It's not isn't it. =[ )

$\displaystyle m = \frac{13 - 0}{0 - 100} = -0,13$
• Dec 4th 2007, 12:50 AM
Hikaru
Quote:

Originally Posted by janvdl
$\displaystyle m = \frac{13 - 0}{0 - 100} = -0,13$

Awesome, thanks!

But where does that 0 come from?

Because if that 0 represents the horizontal gradient, why are we putting it in twice?

• Dec 4th 2007, 01:00 AM
janvdl
Quote:

Originally Posted by Hikaru
Awesome, thanks!

But where does that 0 come from?

Because if that 0 represents the horizontal gradient, why are we putting it in twice?

13
|
|
|
|_________________________100
0

Do you understand that i drew it like a cartesian plane?
• Dec 4th 2007, 01:17 AM
Hikaru
Quote:

Originally Posted by janvdl
13
|
|
|
|_________________________100
0

Do you understand that i drew it like a cartesian plane?

Ohhh I see =]
• Dec 4th 2007, 01:19 AM
janvdl
Quote:

Originally Posted by Hikaru
Ohhh I see =]

Good :D