C1 Maths: Line Intersection? Watch

x_EMILY!_x
Badges: 0
#1
Report Thread starter 8 years ago
#1


Hey

I am having trouble with the following question about line intersections

It is from the C1 January 2009 AQA Maths Paper

The question is:

Line AB has the equation 3x + 3y = 8
The point A has the coordinates (6,-2)

The line AB intersects the line with the equation 2x + 3y = 3 at point B

Find the coordinates of B?


The answer is (-9,7)

Any help would be appreciated! thanks x
0
reply
Revolution is my Name
Badges: 15
Rep:
?
#2
Report 8 years ago
#2
Solve the equations of the lines simultaneously.
0
reply
Wezzler
Badges: 0
Rep:
?
#3
Report 8 years ago
#3
i wish ocr mei was as easy as this. i actually hate mei exam board.
0
reply
ghostwalker
  • Study Helper
Badges: 15
#4
Report 8 years ago
#4
(Original post by x_EMILY!_x)

Line AB has the equation 3x + 3y = 8
I think there is an error in the question.

If you use 3x+5y = 8 for the line AB, it should all work out.
reply
x_EMILY!_x
Badges: 0
#5
Report Thread starter 8 years ago
#5
(Original post by ghostwalker)
I think there is an error in the question.

If you use 3x+5y = 8 for the line AB, it should all work out.


oops yeah its supposed to be 3x + 5y = 8

how do you work it out though? :confused:

thankkks x
0
reply
ghostwalker
  • Study Helper
Badges: 15
#6
Report 8 years ago
#6
(Original post by x_EMILY!_x)


oops yeah its supposed to be 3x + 5y = 8

how do you work it out though? :confused:

thankkks x
As previously stated, you need to solve the two simultaneous equations. If you don't know how, have a look in your textbook, if you do, and it's not working out, then post some working.
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

  • University of East Anglia
    All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
    Wed, 30 Jan '19
  • Aston University
    Postgraduate Open Day Postgraduate
    Wed, 30 Jan '19
  • Solent University
    Careers in maritime Undergraduate
    Sat, 2 Feb '19

Brexit: Given the chance now, would you vote leave or remain?

Remain (985)
79.44%
Leave (255)
20.56%

Watched Threads

View All