You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

find a slop of the line that make a cute angel θ=

,,what is this?

*Last edited by Hannibal lecter (2016-12-24 06:28:34)*

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

Do you mean an acute angle with the positive x-axis?

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

I really this all of the details about the question,, any way forget it I'll find an answer but please answer this one for me :-

(find the equation for line passing through the point (1,2) and parallel to the line : x+2y=3?)

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

Firstly, you'll want to find the slope of that line. Then, any line parallel to that one will have the same slope. Can you find the slope of the line with equation x + 2y = 3?

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

I really forget how to find the slope in this situation, I just know : the slope = Δy/Δx, I know that law but I don't understand it ,, anyway

second : I want to know why any parallel lines will have same slope? I need to understand this and to take advantage from this in the future ...

*Last edited by Hannibal lecter (2016-12-24 10:11:21)*

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

What would two parallel lines look like?

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

| | like these ,

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

they have a θ if 90°?

but not just that

if that so, can we say all lines in the world space have θ=90° are parallel?

*Last edited by Hannibal lecter (2016-12-24 10:20:39)*

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

Hannibal lecter wrote:

| | like these ,

Yes. And what are the slopes of those lines?

Hannibal lecter wrote:

they have a θ if 90°?

No, those are called perpendicular or orthogonal lines.

New: Integration Problem | Adding Fractions

Popular: Continued Fractions | Metric Spaces | Duality

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

I really don't know

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

Do you understand why the lines |, | have the same slope?

New: Integration Problem | Adding Fractions

Popular: Continued Fractions | Metric Spaces | Duality

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

no that is the problem

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

Let's look at this picture.

Any line of the form y = mx + c will have gradient m. The lines | and | have the same slope because one is the same as the other, just moved to a different location.

New: Integration Problem | Adding Fractions

Popular: Continued Fractions | Metric Spaces | Duality

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

yes that is right thanks and now how to find the slop of this, ? I have a point and a line I don't have two points

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

When you have an equation in point slope form like this y = mx + b then m is the slope.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 224
- Website

then what is the slop of this x+2y=3

is it 2y=-x+3?

so y= -1/2x + 3/2

is the slope -0.5?

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

That is correct.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

Pages: **1**