Given $m(x)=7 x^{9}+6 x-9$, answer the following: Part: 0 / 5 Part 1 of 5 (a) Find $m(-x)$ \[ m(-x)=\square \]

Step 1 ：Given the function \(m(x)=7 x^{9}+6 x-9\)

Step 2 ：We are asked to find \(m(-x)\)

Step 3 ：Substitute \(-x\) into the function to get \(m(-x)=7 (-x)^{9}+6 (-x)-9\)

Step 4 ：Simplify the expression to get \(m(-x) = -7x^{9} - 6x - 9\)

Step 5 ：Final Answer: \(m(-x) = \boxed{-7x^{9} - 6x - 9}\)