Where do the lines 2y = 4x + 2 and - 3x + y = 4 intersect?

Rearrange the second equation in the form y = mx + c to get y = 3x + 4. Divide the first equation by 2 to get y = 2x + 1. When the lines intersect, they'll have the same x and y values, hence, set the equations equal to each other to find the x co-ordinate: 2x + 1 = 3x + 4. Collecting like terms gives 1 = x + 4, and then taking the 4 to the other side of the equation gives x = -3. This value is substituted into either equation, allowing you to find the y co-ordinate: (using equation 1) y = 2(-3) + 1, which gives y = -5. Therefore, the two lines intersect at the point (-3,-5).

EJ
Answered by Emma J. Maths tutor

2841 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

If x^2 + 2y = -14 and y = 4x + 1 , by using the quadratic formula, find the possible values for x.


How do you solve the following simultaneous equations? 4x-3y=18, 7x+5y=52


Solve (6/x-2)-(2/x+3)=1


Solve algebraically the simultaneous equations x^2 +y^2 = 25, y – 3x = 13


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning