Question 369222
An example of a polynomial with a degree of 2 is {{{z^2+z-1}}}
Its leading coefficient is 1.

An example of a polynomial with a degree of 3 is {{{3z^3-15}}}
Its leading coefficient is 3.

Following these examples using your equation we have {{{-9z+1}}}
The degree would be the highest power of the variable in this case 1.
The leading coefficient would be -9.