For any real number \(x\) such that \(x\lt -5\) in the equation below, which of the following statements must be true of the number represented by \(y\) ?

$$ y=-\sqrt{x+5} $$

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If \(x\lt -5\), then the expression \(\sqrt{x+5}\) will be negative.

This results in an imaginary number \(i=\sqrt{-1}\).