Help! Equation of a Straight line. (1 Viewer)

[ticklea]

Find the gradient of the straight line perpendicular to the line with x intercept 3 and y- intercept2.

Preliminary Question. Answer:1.5

Please show working out

 

[Rodger Gu]

y=mx+b

 

[ticklea]

STill dont understand....

 

[h3ll h0und]

xintercept = (3, 0 )

yintercept = (0,2)

so gradient of the line = 2/-3

m1 x m2 = -1 (for perpendicular line)

2/-3 x m2 = -1

therefore, m2 = 3/2 = 1.5

 

[ticklea]

Thanks so much

 

[ohexploitable]

If you're having trouble with this, drop to General Maths.

 

[ticklea]

no thanks

 

[Carrotsticks]

If you're having trouble with this, drop to General Maths.

Agreed. 2U gets much harder than this. This is something like year 9/10 standard.

 

[ticklea]

Agreed. 2U gets much harder than this. This is something like year 9/10 standard.

Nope. I did 9 and 10 Advanced 5.3 and perpendicular distance was not a topic nor was it covered. Plus this is a question from a pre practice sheet before we actually start the topic.

 

[ohexploitable]

Nope. I did 9 and 10 Advanced 5.3 and perpendicular distance was not a topic nor was it covered. Plus this is a question from a pre practice sheet before we actually start the topic.

Your question was about perpendicular lines, not perpendicular distance. It would have been covered in the Geometry topic in Year 9.

 

[pman]

and dude, this is the ext 1 forum, sadly you have no hope in here

 

[ticklea]

Your point being?

I was asking one question... thats all and hoping to get an answer, not opinions of wat level of maths I should take. If you dont have the decency to answer then dont tell me your opinions because thats not what I was asking for.

 

[ohexploitable]

decency to answer

Decency to answer?

 

[ohexploitable]

Your point being?

I was asking one question... thats all and hoping to get an answer, not opinions of wat level of maths I should take. If you dont have the decency to answer then dont tell me your opinions because thats not what I was asking for.

Telling you to drop to General wasn't advice, I said that to insult you.

 

[thongetsu]

Why is this in the m.ext1 section?

 

[ohexploitable]

Why is this in the m.ext1 section?

The OP is doing MX1 and is having trouble with Year 9 Geometry.

 

[Matt2233]

IIT: Douche bags

Seriously, as far as you know this guy had a bad teacher who didn't cover perpendicular lines in year 9/10 and is learning it for the first time by himself.

You shouldn't be giving advice/insulting people when you don't know their situation.

 

[dan2452]

^^^Most of the previous posters are douchebags.

Maybe revise over a textbook for this area if you don't understand it.

The basic formula for a straight line is

y= mx + b

where m is the gradient, which can be calculated as (y2-y1)divided by (x2-x1) or rise over run

b is the intercept

Then just use basic rearranging/plotting to figure out gradient.

 

[hscishard]

The OP is doing MX1 and is having trouble with Year 9 Geometry.

So? Its not like everyone can do year 7 questions. E.g. Find the area of a hexagon or What weighs heavier a ton of bricks or a ton of feathers?

 

[mjones14]

So? Its not like everyone can do year 7 questions. E.g. Find the area of a hexagon or What weighs heavier a ton of bricks or a ton of feathers?

the bricks.