Question

What method should i use to solve this↓?

Answer 1

\[x^2+y^2=64\] and\[x^2+64y^2=64\]

Answer 2

isolate x^2 from 1st equation

and plug it in the second equation

Answer 3

\[y^2=64-x^2\]

Answer 4

oops you said isolate x

Answer 5

\[x^2=64-y\]

Answer 6

x^2+y^2 = 64, right ?

so
x^2 = 64 - y^2

Answer 7

yeah sorry i can not type today...

Answer 8

no problem,
now plug that in 2nd equation

64 - y^2 + 64y^2 = 64

can you find y from here ?