I'm really stuck on this simultaneous equationWatch
Solve the simultaneous equations
y = 3x – 1
x² + y² = 5
My teacher gave us the answer but i'm not sure how she got the answer please help.
If so, looking at the first equation, you have in terms of . Therefore, how can you change equation 2 to get an equation just in ?
If it helps, visualise equation one as . Because that is equal to , you're effectively saying that . I hope that is of help.