Coordinate Geometry Watch

PeaceTreaty
Badges: 8
Rep:
?
#1
Report Thread starter 5 years ago
#1
Not sure where to start with this question. Need some help to point me in the right direction.

The line AB meets the line 3x+2y-21 = 0 at M. Find the coordinates of M and show that M devides AB in the ratio 2:1.

So far I've changed the equation to 2y = -3x+21
0
reply
TenOfThem
Badges: 16
Rep:
?
#2
Report 5 years ago
#2
(Original post by PeaceTreaty)
Not sure where to start with this question. Need some help to point me in the right direction.

The line AB meets the line 3x+2y-21 = 0 at M. Find the coordinates of M and show that M devides AB in the ratio 2:1.
I presume there was more to the question
0
reply
PeaceTreaty
Badges: 8
Rep:
?
#3
Report Thread starter 5 years ago
#3
(Original post by TenOfThem)
I presume there was more to the question
Sorry, left out part a: A(-3,2) B(6,8) I worked out it's equation is y = 2/3x+4.
0
reply
TenOfThem
Badges: 16
Rep:
?
#4
Report 5 years ago
#4
(Original post by PeaceTreaty)
Sorry, left out part a: A(-3,2) B(6,8) I worked out it's equation is y = 2/3x+4.
So, you know what y is

Substitue that into the curve equation
0
reply
PeaceTreaty
Badges: 8
Rep:
?
#5
Report Thread starter 5 years ago
#5
(Original post by TenOfThem)
So, you know what y is

Substitue that into the curve equation
So 2(2/3x+4) = -3x+21

Do I need to put in a value for x or just ignore it?
0
reply
PeaceTreaty
Badges: 8
Rep:
?
#6
Report Thread starter 5 years ago
#6
(Original post by TenOfThem)
So, you know what y is<br />
<br />
Substitue that into the curve equation
<br />
<br />

(Original post by PeaceTreaty)
So 2(2/3x+4) = -3x+21<br />
<br />
Do I need to put in a value for x or just ignore it?
<br />
<br />

Nvm thanks for the help.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • Arts University Bournemouth
    Art and Design Foundation Diploma Further education
    Sat, 25 May '19
  • SOAS University of London
    Postgraduate Open Day Postgraduate
    Wed, 29 May '19
  • University of Exeter
    Undergraduate Open Day - Penryn Campus Undergraduate
    Thu, 30 May '19

How did your AQA GCSE Physics Paper 1 go?

Loved the paper - Feeling positive (1)
10%
The paper was reasonable (6)
60%
Not feeling great about that exam... (1)
10%
It was TERRIBLE (2)
20%

Watched Threads

View All
Latest
My Feed