Question

-9 to the negative 1 power

Answer 1

Bear in mind that, (-9) and -9 are very different mammals, we're assuming, you meant (-9)⁻¹.


$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\ a^{-{ n}} \implies \cfrac{1}{a^{ n}} \qquad \qquad \cfrac{1}{a^{ n}}\implies a^{-{ n}} \qquad \qquad a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}} \\\\ -------------------------------\\\\ (-9)^{-1}\implies \cfrac{1}{-9}\implies -\cfrac{1}{9}$