solve the simultaneous equations x^2 + y^2 = 5 and 3x+1=y

Substitute in y to the first equationx2 + (3x+1)2 = 510x2 + 6x - 4 = 55x2+3x-2=0(5x-2)(x+1)x=2/5 or -1Sub these values of x into the first equationy=11/5 and -2

Answered by Isabel D. Maths tutor

2422 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve 3x² + 6x – 2 = 0. Give your solutions correct to 2 decimal places [calculator paper]


Suppose we have a circle whose radius is 5cm. If a sector of this circle has an area of 15 cm^2, what is the size its angle (in degrees)?


Show that n²-n-90=0


In 2017 the number of teachers in a school was 20. The number of teachers doubles each year. If in 2019 3/5 of the teachers are female how many male teachers are there in 2019?


We're here to help

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