How would you solve the simultaneous equations y=x+1 and y=4x-2

You could solve this equation by using substitution, since both equations are in a' y = ' form. You can substitute the first equation into the first, as they both equal y, they both equal each other : x+1=4x-2 . You want to get all the x terms on one side and all the other numbers on the other side of the equals sign. Subtract x from both sides of the equation, to get 1=3x-2. Then add 2 to both sides to get 3=3x. To find x, you can divide both side by 3, so x=1. To finish off solving the simultaneous equations, sub the x=1 back into one of the original equations: y=1+1, so y=2. To check, you can sub your x and y values into the other equation to see if it still makes sense: 2=(4 x 1) -2. This makes sense.

PK
Answered by Priya K. Maths tutor

3602 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the area of the rectangle, in cm, with width 4x and length (y+5). Then calculate the area for x = 7 and y = 8.


x^2+2=18, find the value of x.


If I buy a dress at 30% off the original price and I pay £40. How much was the dress originally?


What is algebra used for?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences