If two linear equations, y = x + 4 and y = 2x + c, intersect at x = 1, find c.

Draw the two equations, indicating the point of intersections (whiteboard).If the lines intersect at x=1, then at that point the y values of each equation are equivalent. Therefore, x+ 4 = 2x + c.Inputting x=1, (1)+4 = 2(1) + c, which is the same as 5 = 2 + cThe answer follows as c = 3.

TD
Answered by Tutor27510 D. Maths tutor

2583 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Express 50p as a fraction of £4 and give your answer in its simplest form.


Factorise the expression given


How do I solve 3x-4=x/2


Expand and simplify fully 4(x - 2) - 2(3 - 5x)


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