Question

Is there a real solution to -y = x^2 + 9 and y = -1?

Answer 1

$$-y = x^2 + 9 \implies x^2 + 9 = - 1$$
$$\implies x^2 = - 10$$

What can you determine from that?

Answer 2

Since there is no square root for -10 there is no real solution? @Opcode

Answer 3

You are correct. :-)

There is no real solution.

Answer 4

Thank you

Answer 5

No problem. :-)