Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

Hi

Distance of point (2,3) form y axis ???

I don't know y axis I found between two points so how find on x axis or y axis???

Malik

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 10,610

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

3???

Malik

Offline

**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 821

Hi,

When we represent a point on a graph we always write it as (x,y) where x is the distance fro the horizantal x-axis and y is the distance from the vertical y-axis. Here, the point (2,3) is 2 units away from x-axis and 3 units away from y-axis. Hence the distance of the pt. from y axis is 3.

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

Offline

iamaditya wrote:

Hi,

When we represent a point on a graph we always write it as (x,y) where x is the distance fro the horizantal x-axis and y is the distance from the vertical y-axis. Here, the point (2,3) is 2 units away from x-axis and 3 units away from y-axis. Hence the distance of the pt. from y axis is 3.

You have that the wrong way round -- x represents the distance from the y-axis, and y represents the distance from the x-axis (so (2,3) is 2 units away from the y-axis, not the x-axis).

*Last edited by zetafunc (2017-04-24 21:49:55)*

Offline

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

Hi;

This is a bit tricky to get but I would say the distance from the y axis is 2. I suggest to not abandon a visual approach here. Please check bob bundy's drawing.

**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

**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 821

zetafunc wrote:

iamaditya wrote:Hi,

When we represent a point on a graph we always write it as (x,y) where x is the distance fro the horizantal x-axis and y is the distance from the vertical y-axis. Here, the point (2,3) is 2 units away from x-axis and 3 units away from y-axis. Hence the distance of the pt. from y axis is 3.

You have that the wrong way round -- x represents the distance from the y-axis, and y represents the distance from the x-axis (so (2,3) is 2 units away from the y-axis, not the x-axis).

Hmm, Thnx for correcting me. I often get confused between the 2.

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

Offline

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

Hi;

Do not forget to visualize problems by drawing diagrams and plots.

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

2 unit away from yaxis and 3 unit away from x AXIS? ??

Malik

Offline

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

Do not forget to visualize problems by drawing diagrams and plots.

True there is alot of tricky questions??

Malik

Offline

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

Question the distance of point (1,1) from origin ??? Plz show with graph

Malik

Offline

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

You need the distance formula or pythagoras for that.

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

So distance is??? How calculate ??I think it is one

Because 1 from x axis and 1 from y axis

Malik

Offline

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

What is the distance of blue line segment?

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

We calculate by scale or other thing??or other method??

Why use distance formula there why In my above question we not use formula??.

Malik

Offline

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

How to use phytagoras theorm in this question??

Malik

Offline

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

The Pythagorean theorem states that the 3 sides of a right triangle are related by this a^2 + b^2 + c^2. Know how to apply that?

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

It make right triangle only in this question ?? It is possible to use this formula in my question of Distance of point (2,3) form y axis ???

Malik

Offline

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

It is not necessary to use Pythagoras on such an easy question.

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

ok but in my question can is use phytagoras??

distance of point 2,3 form yaxis

Malik

Offline

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

I do not think so. The distance of (2,3) from the y axis is a straight line. There is no right triangle.

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

But if it' is negative such as Distance of point (-2,3) form y axis ???

So why ans is 2??? Why not negative

☆

Malik

Offline

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

If you can define what a negative distance is then we can talk about that.

**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

**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 746

If you draw I can tell you about what I am saying

Malik

Offline

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

There is no such thing as a negative distance.

The distance formula for points (x2,y2) and (x1,y1)

Because the number (x2 -x1) is squared and then added to (y2-y1)^2 it is easy to see that the distance is always positive.

**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