Question

what is the solution for y=2x
x+y=0,
is it (0,0)?

Answer 1

You can use substitution. Since \(\rm y = 2x\),\[\rm x + 2x = 0 \]so\[\rm 3x = 0\]which implies\[x = 0\]

Answer 2

Yes, it is (0,0)!

Answer 3

thanks