Solve the following simultaneous equations: x^2 + y^2 = 5, y - 3x = 1.

Begin by rearranging equation 2 so that it is in the form y = ...
Substitute this into equation 1
Expand the brackets and simplify the equation so that it is in the form Ax^2 + Bx + C = 0
Factorise this quadratic equation to find the two possible solutions for x
Find the respective y values for each value of x
y = 3x +1x^2 + (3x + 1)^2 = 510x^2 + 6x -4 = 0(10x - 4)(x + 1) = 0x = 0.4 or x = -1y = 2.2 or y = -2

DO
Answered by Daniel O. Maths tutor

2966 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the following simulatenous equation to find the values of both x and y: 5x+2y=16 3x-y=14


Solve the following equation: 13y - 5 = 9y + 27


Express the equation x^2+6x-12 in the form (x+p)^2+q


When solving two simultaneous equations, when should you use the method of elimination and when would you use the method of substitution?


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences